1、serious

严重的;危急的;令人担忧的

Crime is an increasingly serious problem in Russian society.

犯罪猖獗是俄罗斯社会面临的一个日益严重的问题。

The government still face very serious difficulties.

政府仍然面临着非常严峻的困难。

重要的;需要认真考虑的;严肃的

I regard this as a serious matter.

我认为这件事很重要。

Don't laugh boy. This is serious.

小伙子，别笑，这很严肃。

认真的;郑重的;严肃的

My parents never really faced up to my drug use in any serious way.

我父母从未认真地正视过我的吸毒问题。

It was a question which deserved serious consideration.

这是一个值得认真考虑的问题。

2、come on

(表示鼓励)来吧

Come on Doreen, let's dance.

来吧，多琳，我们跳舞吧。

得了吧;算了吧

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

“你是不是把这些都告诉警方了？”“呀，怎么会呢！”

Come on, Sue, that was two years ago.

得了吧，休，那是两年前。

进展;进步

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

李现在进步很大，问题是如何在队里给他找一个合适的位置。

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

膝盖恢复得很好，我现在走路已经不疼了。