prep.在 ... 里；在 ... 地方；在 ... 期間；在 ... 方面；進(jìn)入...里面；處于...狀態(tài)；穿著...；以...的方式

adv.在家；入；進(jìn)；向里；在某地；并入；在某種關(guān)系中

adj.在里面的；新來的；執(zhí)政的；時(shí)髦的

n.當(dāng)權(quán)者；影響；達(dá)成目標(biāo)的路徑

The telephone was in the little study on the ground floor. 電話在底樓的小房書里。

The books are printed in Hong Kong. 這些書在香港印刷。

They are in research of this new technique. 他們正在研究這種新工藝。

He is a layman in economics. 他對(duì)經(jīng)濟(jì)學(xué)一竅不通。

I invited him in for a drink. 我邀請(qǐng)他進(jìn)屋喝一杯。

I am sorry that my room is in such a mess. 不好意思,我的房間太亂了。

She looked so beautiful in her wedding dress. 她穿上婚紗看起來真美。

You have to pay in cash. 你得付現(xiàn)金。

We are trying to teach mathematics in a more interesting way. 我們正在努力嘗試著用一種有趣的方式來教數(shù)學(xué)。

We all sat around in a circle. 我們圍成一圈坐在一起。

He is not in at the moment. 這個(gè)時(shí)候他不在家。

He opened the door and stepped in. 他打開門走了進(jìn)去。

Evan found a photography shop, went in, and talked with the clerk. 艾凡找到一家照相館,走進(jìn)去和店員講話。

She looked in the window and found a baby sleeping on the bed. 她朝窗戶里看,發(fā)現(xiàn)有個(gè)嬰兒在床上睡覺。

They are having a heated argument. You'd better not wade in. 他們討論地很激烈，你最好不要介入。

He got in bad with his roommate. 他與室友相處得不好。

The in part of the machine is very complex.