1、turn on

打開（設備）；接通（…的供應）

I want to turn on the television.

我想開電視。

She asked them why they hadn't turned the lights on.

她問他們為什么不開燈。

對…進行身體（或語言)攻擊;斥責

Demonstrators turned on police, overturning vehicles and setting fire to them.

示威者攻擊警察，推翻車輛并將其縱火焚燒。

He turned on Pete and accused him of being mixed up in drugs.

他怒斥皮特，指責他沾染毒品。

依靠;取決于

The plot turns on whether Ilsa will choose her lover or her husband.

故事情節取決于伊爾莎會選擇情人還是丈夫。

2、introduce

引進;首次引入;推行

The Government has introduced a number of other money-saving moves.

政府已經采取了其他一些省錢的舉措。

I kept the birds indoors all winter and introduced them into an aviary the following June.

整個冬天我把鳥關在室內,然后在接下來的6月份把它們放入鳥類飼養場飼養。

介紹;引薦;使相互認識

Tim, may I introduce you to my uncle's secretary, Mary Waller?

蒂姆,我來介紹一下，這位是我叔叔的秘書瑪麗·沃勒。

Someone introduced us and I sat next to him.

有人給我們作了介紹,我挨著他坐下了。