My mother was a very cautious driver.我母亲开车很小心。

The scientists are cautious about using enzyme therapy on humans.科学家们对给人使用酶疗法很谨慎。

He has been seen as a champion of a more cautious approach to economic reform.他一向被视为一个提倡对经济改革方式采取更为谨慎态度的人。