The scientists are cautious about using enzyme therapy on humans.

科学家们对于人体使用酶疗法持谨慎态度。

《柯林斯英汉双解大词典》

Generally speaking, those who are most cautious about geo-engineering are the scientists involved in the research.

一般来说，那些对地质工程最谨慎的人是参与研究的科学家。

youdao

I am confident about Alibaba's future success but some remain cautious about possible risks, including its product quality.

我对阿里巴巴未来的成功充满信心，但一些人仍对可能的风险持谨慎态度，包括其产品质量。

youdao

The major general says some Iraqi leaders are still cautious about the U.S.troop presence in their country.

VOA: standard.2009.08.06

Still,Burton is cautious about how it will all play out, given the enormity of the task.

VOA: standard.2009.06.15

They also hailed Mr.Obama's vow to close the Guantanamo Bay detention camp within a year, although they are more cautious about possibly accepting ex-detainees.

VOA: standard.2009.03.29

Sainsbury's, like John Lewis, was cautious about how well it would continue to perform this year.

FORBES: Magazine Article

Traders may have further reason be cautious about euro-area equities in the coming year.

FORBES: Magazine Article

In fact, there are many reasons to be cautious about expecting Arabs to follow Turks.

ECONOMIST: The Turkish model