It was 20 miles there and back.

I can go there and back in half an hour.

我能在半小时内往返一次.

We have time go there and back before lunch.

我们到那里去一次,回来吃午饭还来得及.

They take the space shuttle , and go there and back.

他们坐宇宙飞船往返.

Can I go there and back in a day?

我一天内能打来回 吗 ?

Can I go there and back in one day?

我能够一天打来回吗？

You have enough time to go there and back before dinner.

你们到那里去了再回来吃晚饭还来得及.

We drive there and back on one tank of petrol.

我们开车到那里来回用了一油箱汽油.

It's one hell of a train trip, about five days there and back.

这趟旅行来回坐了大约5天火车，受的那个罪就别提了。

It takes four hours to go there and back.

往返要4个小时。

I want to go there and back on the same day.

我想一天就来回.

She had to cover her own mouth to keep back the cries.

她不得不捂住嘴,抑制住哭声.

The fireman told me to keep back.

消防队员要我站远点.

She struggled to keep back the tears.

她努力忍住泪水.

She wasn't able to keep back her tears.

她抑制不住眼泪.

I will keep back nothing from you.

我对你什么都不隐瞒.

I fought to keep back my tears.

我努力控制住泪水.

In vain I tried to keep back my tears.

我怎么也忍不住我的眼泪.

The two-week prevalence of attendance and hospitalization rate of herdsmen was well below the national rural level in 2007, The two-week prevalence of absence rate and none-hospitalization rate was higher than the national rural level.

牧民两周就诊和住院率低于同期全国农村水平，两周患病未就诊和未住院率高于同期全国农村水平。

Residents in two weeks is not 42.53% attendance and the rate should be patient hospitalization rate is not 24.68%.

居民的两周未就诊率是42.53%，应住院未住院率是24.68%。

The research under the condition of absent queen colony suggest: worker bees in the absent queen colony appear fidget, more tend to sting, attendance rate descend to 36 5~ 48 3%, the ability of collection degrade.

对无王状态下蜂群的研究表明：无王蜂群烦躁不安，易螫人，出勤率下降365～483%，采集力降低。