1、come on

(表示鼓勵)來吧

Come on Doreen, let's dance.

來吧，多琳，我們跳舞吧。

得了吧;算了吧

'Have you said all this to the police?' — 'Aw, come on!'

“你是不是把這些都告訴警方了？”“呀，怎么會呢！”

Come on, Sue, that was two years ago.

得了吧，休，那是兩年前。

進展;進步

Lee is coming on very well now and it's a matter of deciding how to fit him into the team.

李現在進步很大，問題是如何在隊里給他找一個合適的位置。

The knee's coming on fine, I'm walking comfortably already.

膝蓋恢復得很好，我現在走路已經不疼了。

(新的季節或天氣)到來

Winter was coming on again.

冬天又來了。

I had two miles to go and it was just coming on to rain.

我還要走兩英里，這時候卻下起了雨。

2、obsess

（使）著迷；（使）迷戀；（使）心神不寧

I must admit that maps obsess me.

我得承認我對地圖十分著迷。

A string of scandals is obsessing America.

美國正被一系列丑聞所困擾。

3、constant

持續不斷的;重復的;一直存在的

She suggests that women are under constant pressure to be abnormally thin.

她暗示說女性總是處在保持身材異常瘦削的壓力之下。

Inflation is a constant threat.

通貨膨脹始終是個威脅。

恒定物;常數；常量；常項

In the world of fashion it sometimes seems that the only constant is ceaseless change.

在時裝界，有時似乎唯一永恒不變的東西就是不斷的變化。

Two significant constants have been found in a number of research studies.

若干研究已經發現了兩個重要常量。