be twice as careful

• 加倍小心

be twice as careful的用法和样例：

例句

1. You've got to be doubly careful when you're driving in fog.
   雾天开车你得加倍小心。
2. My own sense is that one should be very wary about deploying the idea of legitimacy.
   我的个人意见是当我们使用正当性这个概念的时候应当加倍小心。