本集核心英语单词及例句：

1.authentic (adj.)真正的
This is a roll of authentic North American toilet paper from New York City.
这是一卷真正来自纽约的北美的卫生纸。

2.typical (adj.)典型的；特有的或特别的
He really is a typical nerd.
他真是一个典型书呆子。

3.arrange (v.)把...（系统地）分类；整理
I will arrange for someone to take you around.
我会安排人带你转转。

4.roll (v.)原地转圈；滚动
Their car went off the road and rolled over.
他们的车冲出公路，翻倒在一旁。

5.dispenser (n.)分配器；自动售卖机
The water dispenser is there; please make yourself at home.
饮水机就在那里，您请自便。

6.thickness (n.)层；浓度；厚（度)
Toilet paper is sold according to its thickness, isn't it?
卫生纸是不是按照它的厚度卖的？

7.ply (n.)股；层；厚
I really like to use three-ply toilet paper. How about you?
我真的喜欢用三层的卫生纸。你呢？