1
00:02:31,710 --> 00:02:35,050
这道题应该用方程的解法更简单

2
00:02:36,590 --> 00:02:38,260
这样哦

3
00:02:41,590 --> 00:02:45,890
看一下该如何设置未知数啊

4
00:03:03,530 --> 00:03:06,410
好像不会哦

5
00:03:08,910 --> 00:03:11,620
感觉好难啊

6
00:03:30,350 --> 00:03:33,400
你看看这样写对吗

7
00:03:36,520 --> 00:03:39,690
主要是看看未知数是哪个比较好

8
00:03:52,830 --> 00:03:57,380
好热啊

9
00:04:01,340 --> 00:04:05,340
快点专心把这个题解出来

10
00:04:19,690 --> 00:04:24,450
给我书，我要看一个公式

11
00:04:32,580 --> 00:04:35,960
是用这个吗

12
00:04:40,670 --> 00:04:46,340
对，公式用这个没错，我给讲讲怎么用哈

13
00:04:55,440 --> 00:05:02,030
你怎么了 嘿嘿 老师我好热啊

14
00:05:04,860 --> 00:05:11,370
怎么会热呢 嘿嘿 人家哪里知道嘛

15
00:05:15,330 --> 00:05:20,290
那先别学了，先降降温吧 嘿嘿 怎么降啊

16
00:05:20,290 --> 00:05:22,880
是这里热吗 嘿嘿

17
00:05:25,720 --> 00:05:28,800
老师怎么知道的呢

18
00:05:29,390 --> 00:05:32,600
热就脱掉吧

19
00:05:39,900 --> 00:05:44,940
脱掉吧 亲亲就不热了

20
00:05:56,370 --> 00:06:01,210
老师，你要干嘛

21
00:06:18,520 --> 00:06:22,110
小女孩儿发育就是好  老师喜欢你

22
00:06:27,400 --> 00:06:34,030
啊··

23
00:06:45,880 --> 00:06:52,680
脱掉吧  把衣服脱掉就不热了

24
00:06:55,600 --> 00:06:58,180
可是这样做好吗  老师

25
00:07:03,980 --> 00:07:07,940
没有什么不好的 老师会好好疼爱你的

26
00:07:10,860 --> 00:07:15,030
嘿嘿 人家不好意思嘛

27
00:07:17,410 --> 00:07:20,870
不要·· 爸爸

28
00:07:22,620 --> 00:07:25,040
你看看 乳头都硬了

29
00:07:26,960 --> 00:07:29,590
哪有··· 不要

30
00:07:37,720 --> 00:07:41,140
你看看是不是硬了   哦哦···

31
00:07:43,600 --> 00:07:49,570
两边一块儿弄更爽吧

32
00:07:54,070 --> 00:08:00,700
好奇怪的感觉啊 受不了啦 啊啊··

33
00:08:12,220 --> 00:08:18,600
喜欢这种感觉吗   喜欢

34
00:08:20,560 --> 00:08:23,480
一会儿会更爽的

35
00:08:26,860 --> 00:08:32,400
好喜欢这样被摸 啊··啊··

36
00:08:58,890 --> 00:09:05,600
你这胸发育得真好啊   真的吗

37
00:09:12,280 --> 00:09:16,320
真的 手感真好

38
00:09:25,500 --> 00:09:30,880
现在该轮到下面降降温了吧

39
00:09:32,300 --> 00:09:37,550
来吧 不要···

40
00:09:47,940 --> 00:09:55,150
会很爽的  啊··啊···

41
00:10:03,830 --> 00:10:07,080
啊··啊·

42
00:10:20,890 --> 00:10:24,810
爽吗 哦哦···

43
00:10:34,020 --> 00:10:38,400
啊···啊·· 好爽

44
00:11:59,610 --> 00:12:05,820
转过来 把下面都脱掉吧

45
00:12:12,500 --> 00:12:16,250
脱掉 老师让你更爽

46
00:12:37,900 --> 00:12:42,360
丫头好完美的身材啊   嘿嘿

47
00:12:50,450 --> 00:12:55,080
老师 你那儿···勃起啦···

48
00:12:59,630 --> 00:13:03,590
你要干嘛啊 老师···

49
00:13:47,090 --> 00:13:51,890
好性感的屁股啊

50
00:15:20,100 --> 00:15:26,570
小骚穴痒了吧 让老师看看

51
00:15:48,170 --> 00:15:51,050
好粉 好嫩哦

52
00:15:51,680 --> 00:15:55,300
嘿嘿 哦

53
00:15:58,310 --> 00:16:05,020
小姑娘的屄好嫩哦 舔起来感觉一定很好

54
00:16:12,530 --> 00:16:19,450
哦·· 啊·· 啊·····

55
00:16:22,250 --> 00:16:26,920
别舔了老师，我受不了的

56
00:17:37,530 --> 00:17:45,330
啊·· 用手指插进去的感觉怎样  啊···· 好爽

57
00:17:54,760 --> 00:17:59,510
好舒服···

58
00:18:27,580 --> 00:18:30,750
停下来···

59
00:18:35,050 --> 00:18:41,890
爽吗  好深 好爽啊

60
00:18:47,980 --> 00:19:00,740
哦·· 啊··  啊···  受不了了老师···· 啊啊啊····

61
00:19:07,540 --> 00:19:10,170
全都脱下来吧

62
00:19:15,710 --> 00:19:20,880
老师，好羞啊 怪不好意思的

63
00:19:28,350 --> 00:19:33,520
女学生的小穴好漂亮 老师好喜欢

64
00:19:35,110 --> 00:19:43,820
好羞啊····

65
00:19:49,540 --> 00:19:52,460
别害羞 老师来了

66
00:19:55,960 --> 00:19:59,420
你想让老师肏吗

67
00:20:01,380 --> 00:20:05,640
你听听淫荡的声音

68
00:20:12,350 --> 00:20:15,480
啊·· 啊····

69
00:20:20,150 --> 00:20:33,670
啊··· 哦···· 啊啊啊·····啊啊啊····· 要射了·····

70
00:20:42,630 --> 00:20:44,930
啊啊··要射了···啊啊···

71
00:21:03,610 --> 00:21:28,180
啊啊··老师好爽啊····要高潮啦·· 高潮啦··· 啊····啊·····

72
00:22:34,290 --> 00:22:45,210
快过来 该你了 给老师吹吹

73
00:22:53,970 --> 00:23:00,350
吹吧  哦··好可爱哦···· 嘿嘿

74
00:25:35,680 --> 00:25:42,770
来，丫头啊，咱换个姿势的

75
00:26:06,330 --> 00:26:11,840
啊···哦·· 这样好爽啊 老师···

76
00:27:03,140 --> 00:27:10,060
啊···啊啊··· 啊····啊·····

77
00:27:11,770 --> 00:27:24,580
不要舔啦 老师·· 受不了啦·· 要高潮了 高潮了啊啊·····

78
00:27:39,720 --> 00:27:42,130
老师，快肏我吧 我受不了了

79
00:28:03,320 --> 00:28:08,580
快要开始了，先让老师亲亲

80
00:28:29,140 --> 00:28:36,400
把腿分开，老师来了

81
00:28:56,920 --> 00:29:02,970
老师要插进来了

82
00:29:15,770 --> 00:29:22,440
老师不要弄疼我，人家的小屄太紧了

83
00:29:28,200 --> 00:29:33,000
好的 老师会轻轻的

84
00:29:54,600 --> 00:30:00,730
老师 你真的肏进来了 好充实啊 啊啊啊····

85
00:30:03,480 --> 00:30:07,400
啊啊····啊啊····啊···

86
00:30:18,830 --> 00:30:24,960
老师的鸡巴好大啊，肏得我好舒服 啊·· 啊啊····

87
00:30:57,040 --> 00:31:01,130
老师再用力些 快一些

88
00:31:53,590 --> 00:31:58,890
啊啊··· 肏啊··· 用力····   爽吗

89
00:32:02,690 --> 00:32:09,230
爽啊 老师肏得我好爽啊··· 啊····啊·····爽····

90
00:33:57,550 --> 00:34:02,640
坐上来，自己动

91
00:38:19,560 --> 00:38:23,820
老师这样进去得好多啊 顶到子宫啦

92
00:39:22,710 --> 00:39:29,930
来，让老师从肏进去，这样会更爽

93
00:39:36,470 --> 00:39:40,980
把屁股撅好 你这样的骚屄从后面肏才过瘾

94
00:39:42,520 --> 00:39:47,940
比你妈妈当年的屄还要骚

95
00:39:49,320 --> 00:39:59,000
老师 以后多肏肏人家吧 人家的屄一直为老师敞开  快肏进来

96
00:39:59,000 --> 00:40:01,000
老师求求你，快点肏我，肏我的小骚屄

97
00:40:06,920 --> 00:40:10,170
好痒啊 好痒 啊····

98
00:40:13,180 --> 00:40:26,570
啊···啊···啊··· 老师，你就快点用力肏我吧

99
00:40:58,220 --> 00:41:07,440
老师 求你了求你快肏我吧

100
00:41:32,550 --> 00:41:38,350
老师来了，看老师怎么肏死你这个小 浪屄骚屄的太骚了

101
00:41:48,480 --> 00:41:54,490
老师，从后面被肏的感觉太爽啦

102
00:42:48,290 --> 00:43:21,700
啊··· 啊·····啊·······啊啊啊······啊啊啊 ····· 啊···

103
00:43:22,280 --> 00:43:29,160
啊···啊 高潮了，又要高潮啦····啊···啊啊啊啊········

104
00:43:51,730 --> 00:43:58,900
肏死你，我肏·· 女儿这屄太紧了，肏得太舒服···

105
00:46:17,540 --> 00:46:22,670
来，还个让你更爽的姿势

106
00:46:30,470 --> 00:46:38,390
爸爸 插到女儿子宫里了

107
00:47:11,930 --> 00:47:14,390
女儿这屁股太性感了

108
00:47:21,350 --> 00:47:30,240
啊···啊··好爽啊···啊啊啊····啊·······高潮了···高潮了····要高潮了··

109
00:47:44,130 --> 00:47:50,260
爸爸 受不了受不了····快被肏死了··

110
00:47:59,480 --> 00:48:07,280
好爽 要受不了

111
00:48:11,450 --> 00:48:16,450
女儿，可以射进去吗  可以射进来 现在安全期

112
00:48:21,210 --> 00:48:26,040
那爸爸要射进来了哦   快射给我吧 爸爸

113
00:48:27,050 --> 00:48:32,220
啊啊···啊····啊啊啊····啊······射进来吧

114
00:48:32,220 --> 00:48:34,220
那都射给你 女儿

115
00:48:47,320 --> 00:48:52,700
爸爸 你射了好多 你内射了女儿 我好喜欢爸爸的精液

116
00:49:11,510 --> 00:49:16,970
流出来好多哦

117
00:49:38,410 --> 00:49:42,080
再给爸爸舔干净了吧 女儿真乖

118
00:50:01,220 --> 00:50:06,520
被爸爸肏，女儿好幸福啊

119
00:50:08,100 --> 00:50:13,070
以后想什么时候肏女儿的骚屄，就什么时候肏

120
00:50:13,070 --> 00:50:15,070