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1·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》

2·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。

3·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。

4·They're more cautious about sharing information with nonmembers, as the organization guards against others developing the ability to hijack and take control of their satellites.

因为该组织提防他人拥有劫持和控制他们的卫星的能力，他们在与非成员分享信息时更加谨慎。

5·He was very cautious about committing himself to anything.

他谨小慎微，从不轻易表态。《牛津词典》

6·Employers may become overly cautious about taking on new staff.

雇主在雇用新员工的问题上可能会过于谨慎。《柯林斯英汉双解大词典》

7·Mohan is cautious about this approach, yet she supports the purpose behind these digital beings and is optimistic about where they are headed.

莫汉对这种方法持谨慎态度，但她支持这些数字化生物背后的目的，并对其发展方向持乐观态度。

8·However, Westhusin is cautious about his work.

然而，Westhusin 非常谨慎地对待他的工作。

9·In her talks with Colin, Mary had tried to be very cautious about the secret garden.

在跟科林聊天时，玛丽对秘密花园的事都尽量小心翼翼的。

10·Because employment protection laws make it costlier to fire an employee, employers are more cautious about hiring new staff.

由于就业保护法使解雇雇员的成本更高，雇主在雇佣新员工时会更加谨慎。