Vibrato is a very expressive technique, and can say a thousand different things when properly used (or misused).

颤音是一个很富有表现力的技巧，可以说在适当的使用(或滥用)时能有上千种不同的效果。

youdao

Centipedes, snakes and scorpions are venomous, but, when properly used, they cure disease by combating poison with poison, don't they?

蜈蚣蛇蝎是毒虫，但用得其当不也能以毒攻毒地治病吗？

youdao

When used properly, worry is an incredible device.

如果运用得当，忧虑也是一种不可思议的工具。

youdao

When used properly big data analysis leads to a deeper understanding of both the customer and the business processes used to serve them.

FORBES: Curing the Big Data Storage Fetish

What is sad is that these centers are needed for troubled youth, when used properly.

FORBES: Even Judges Commit Crimes, Bad Ones

Even opponents agree that, when used properly, eminent domain can be an effective tool.

WSJ: Battle of the Beach