Boldly said, and I believe thee, whether thy small headpiece be sound or cracked, my boy.

大胆地说，我相信你，不管你的小脑袋是健全的还是破裂的，我的孩子。

youdao

There is a kind of rough wall surface, which is said to be sound-absorbing.

有一种墙面是麻的，据说可以吸音。

《新英汉大辞典》

Where there is sound, there must be sound waves.

哪里有声音，哪里就必有声波。

youdao

For example, read copies of a group's financial records and be careful of groups with names that sound like well-known charities.

VOA: special.2009.11.02

Moreover, beyond that, how does one know, in taking out an insurance policy, that the insurance company is going to be sound?

除此之外，在人们购买保险时，该如何得知保险公司，会严格按照保单言而守信呢？

耶鲁公开课 - 金融市场课程节选

The second one is going to be sound that's going to come on at the end.

第二段影片的最后会有些声音

耶鲁公开课 - 心理学导论课程节选

Anthony carefully sealed the cracks in the barn so the Donkey Motel would be sound.

NPR: Excerpt: 'Dog Days'

The roof was iron, and it looked to be sound, though storm-dented and running with rust.

NEWYORKER: Idols

Taking a look at legal budgets may be sound advice for energy companies, especially during austere times.

FORBES: Energy Companies Pursue Justice at a Fixed Cost