11. fowl

（n.）鳥(niǎo)禽類(lèi)

Ducks are a type of water fowl.

鴨子是一種水上禽鳥(niǎo)。

12. seeing each other

約會(huì)

We've been seeing each other for about 3 months.

我們已經(jīng)約會(huì)大約三個(gè)月了。

13. complimentary

（a.）【美】贈(zèng)送的

The flight attendant gave me a complimentary drink after we took off.

飛機(jī)起飛后，服務(wù)人員給我們附贈(zèng)的飲料。

14. currency

（n.）貨幣

Every country has its own currency.

每個(gè)國(guó)家都有自己的貨幣。

15. behave yourself

規(guī)矩點(diǎn)

Please behave yourself before the guests.

在賓客面前請(qǐng)你檢點(diǎn)一些。

16. reusable

（a.）可重復(fù)使用的

Reusable items last longer than disposable ones and help the environment.

可重復(fù)使用的物品比拋棄式耐用，而且對(duì)環(huán)境比較好。

17. impact

（n.）影響

Tourists can have a big impact on the places they visit.

觀光客對(duì)他們所參觀的地方可造成很大的影響。

18. behind the scenes

幕后

He is the man behind the scenes.

他是幕后人物。

19. contraband

（n.）違禁品

If you bring contraband into a country, you may go to jail.

如果你把違禁品帶進(jìn)一個(gè)國(guó)家，可能要坐牢。

20. quarantine

（n.）隔離

If you bring your pet to another country, you may have to put it in quarantine for a while.

如果你把寵物帶到另一個(gè)國(guó)家，它可能要被隔離一段時(shí)間。