She's not very consistent in the way she treats her children.

Not a single one of these conditions can be dispensed with.

这些条件缺一不可.

You can't just count upon one single person to get the work done properly.

单指一个人是不能把事情做好的.

A single spark can start a prairie fire.

星星之火,可以燎原.

A single tree in a field is prominent.

田地里一棵孤零零的树是很显眼的.

This single item will suffice to typify all the rest.

即此一端,可概其余.

All the speakers hook up to a single amplifier.

所有喇叭都接在单一的扩音器上.

She had had many proposals but preferred to remain single.

许多人向她求过婚,但她愿过独身生活.

She lives in single quarters now.

现在她住在单人营房.

I got a single to Birmingham.

我买了一张去伯明翰的单程票.

They quoted 756 dollars for the single New York — London fare.

他们对纽约到伦敦的单程机票开价是756美元.

We've lumped all the top students in single class.

我们把所有优等生都编在一个班里.

The soldiers were walking in single file.

战士们排成一列纵队前进.

A single candidate is put forward and the people vote yes or no.

先推出一个候选人，由人们投票表示赞成或反对。

Is it difficult being a single mother?

做单身妈妈难吗？

Single parents cope heroically in doing the job of two people.

单身父母扮演双亲的角色非常辛苦。

They were leery about investing in a company controlled by a single individual.

把资金投向一个由一人独自操控的公司，他们不大放心。

The revenue from tourism is the biggest single item in the country's invisible earnings.

旅游业收入是该国无形收益当中最大的一项。

We were walking in single file to the lake.

我们正排成一列朝湖边走去。

A lorry can drive up to 600 miles on a single tank of fuel.

大卡车只用一箱油就能行驶600英里。

Most single parents are either divorced or separated.

大多数单身父母要么离婚了要么分居了。