查询词典 off and on

I am studying english off and on for 4 years.

我断断续续学了四年英语了。

I have learned english for four years off and on.

我断断续续学了四年英语了。

I've been learning English off and on for 4 years.

我断断续续学了四年了。

I learned English for 4 years off and on.

我断断续续学了四年英语了。

During his career he always turned off and on in an instant during the games.

在他的职业生涯中，他经常在伤愈复出后立即投入比赛。

Para. 1 I'm sorry that I have no idea what are saying, it's just that I've been studying off and on, you see.

对不起，我不知道你在说什么，因为你知道，我中介断断续续地在学。

It was railing off and on from yesterday.

从昨天起就断断续续的下着雨。

English has been studied for 3 years off and on at the spare-time school.

我们已经在夜校里断断续续地学了三年英语了。

English has been studied for 3 years by us off and on at the spare-time school.

我们已经在夜校里断断续续地学了三年英语了。

Have studied English for 3 years off and on at the spare-time school.

have随新主语变为has 我们已经在夜校里断断续续地学了三年英语了。

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。