He had done his homework before the tour started, and his basic ideas were sound.

They amplified their sound.

他们提高了嗓门.

He likes to awake to the sound of a radio.

他喜欢在广播声中醒来.

Can you sound your friend out and see whether he will help?

你能试探一下你的朋友,看看他能否帮忙 吗 ?

A long vowel is a long sound as in the word'shoe ".

长元音即如“shoe ” 一词中的长音.

I could hear the sound of a babbling brook.

我听得见小溪潺潺的流水声.

If you don't like the way we're doing the job, sound off!

要是你不喜欢我们的工作方式就说出来.

I'm glad to see you home safe and sound.

看到你平安回家我很高兴.

On the morning of New Year's Day, people woke to the sound of firecrackers.

元旦早上, 人们醒来便可以听到鞭炮声.

Sound travels slower than light.

声音传播比光慢.

Sound waves will not travel through a vacuum.

声波在真空里不能传播.

He found what he was saying was not proper for the occasion and he stopped short.

他觉得自己说的话不对碴儿,就停住了.

I could hear the sound of his ragged breathing.

我能够听到他那急促的呼吸声。

the sound of footsteps on the stairs

楼梯上的脚步声

I'm afraid this isn't the proper way to handle the case.

这样处理,恐怕不妥.

This is not the proper way.

这种方法不妥.

the National Sound Archive

国家音响档案馆

The book hardly belongs to literature proper.

这本书不好说是纯文学书.

The rights of citizens must not be abridged without proper cause.

没有正当理由,不能擅自剥夺公民的权利.

This formulation is not proper.

这种提法不妥.

Put the instruments in their proper places.

把仪器安放好.