You can have sound advice which is good advice, a piece of advice.

你可以说很棒的建议，意思是很好的建议，一个建议。

The book is full of sound advice.

【sound】这本书中有许多合理的建议。

I wrote back three pages full of sound advice...

我给她回信 切实可行的建议写了满满三页纸。

It had been something about Collis going into his father's business--good sound advice.

这是关于科利斯进入他父亲的生意的一些事情——很好的建议。

I think that's pretty sound advice—you can find COVID wastewater surveillance data on the CDC's data tracker.

Young：我认为这是非常合理的建议——你可以在 CDC 的数据跟踪器上找到 COVID 废水监测数据。

The headmaster said, Young gentlemen, the greatest speaker of our time, will be here in a few days to address you, and you should obey whatever sound advice he may give you.

“年轻的先生们，当代最伟大的演说家过几天就会来为你们演讲，他提出的任何中肯的建议，你们都要听从。”