be careful

英 [bi: 'keəfl] 美 [bi: 'keəfl]

• 当心, 注意

be careful的用法和样例：

例句

1. Be careful about what you say.
   对你所说的话要小心。
2. You should be careful when making a promise.
   你应当谨慎做出承诺。
3. Be careful!
   一定要小心！
4. Be careful crossing the road.
   过马路要当心。
5. Be careful of that viper; he is dangerous.
   小心那个阴险的人，他很危险。
6. Be careful of that chair; it's a bit rocky.
   当心，那椅子有些不稳。
7. Be careful when you cross the road.
   过马路时要当心。
8. Be careful not to lose too much liquid by evaporation.
   小心，不要因为蒸发作用而失掉过多的水份。