1、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。

介紹;使了解;使初次接觸

He introduced us to the delights of natural food.

他讓我們認識到食用天然食物的樂趣。

2、look up

（在參考書、列表等中）查檢（事實或信息）

I looked your address up in the personnel file.

我在人事檔案里找到了你的地址。

Many people have to look up the meaning of this word in the dictionary.

這個詞的意思很多人都要查字典才知道。

拜訪，探訪，看望（久未見面的人）

I'll try to look him up, ask him a few questions.

我會設法登門拜訪，問他幾個問題。

She looked up some friends of bygone years.

她去看望了一些過去的老朋友。

改善；好轉

Things could be looking up in the computer industry.

計算機行業的情況可能會好轉。