谨慎的英文：
cautious

A tactful remark.
谨慎的话语

A cautious driver
谨慎的司机

Chary of lending money
贷款谨慎的.

walk warily
谨慎行事

He is prudence personified.
他是谨慎的化身。

The nicety of a diplomatic exchange.
外交往来的谨慎

a tactful person;a tactful remark.
机敏的人;谨慎的话语

You must guard your tongue carefully.
你必须言语谨慎。

With studious politeness
谨慎有礼地

The Better part of valor is discretion
谨慎即大勇

Be cautious of thieves!
提防扒手！

A cautious mind is the half of wisdom
谨慎小心近于明智

He is cautious of telling secrets.
他留心不泄密。

Losses make us more cautious.
损失使人更谨慎。

In dealing with the problem he was cautious to an extreme.
他在处理这个问题时谨慎得过分了。