某事

To jump the gun means to do something too soon, or before you are supposed to do it.

Jump the gun的意思是过早地做出决定，或在别人期望之前做了某事。

Keep at sth/doing sth.

坚持做某事。

Keep doing something .

一直做某事

That is " be pissing in the wind ", and it exactly means keep doing something that is a complete waste of effort or time for which you can expect no results and may even backfire on you.

这个习语的意思是：浪费时间和人力做某事，却没有效果，甚至适得其反。有时候根据语境，我们还可以把它译为：不管用，或者白白浪费；等。

Keep somebody doing something .

让某人一直做某事

To keep from doing something; impede

阻碍：使不做某事；阻挠

Keep doing something phr.

一直做某事

You should keep doing sth.

你应当继续做某事。

Keep on doing sth. keep doing sth.

是继续不停地做某事

JACK: Yeah, you keep saying that. keep doing sth.

继续做某事好吧，你继续说吧。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。