Be careful
US /bi ˈker.fəl/
UK /bi ˈkeə.fəl/
短语
小心, 注意
used to warn someone to be cautious or to pay attention to potential danger or problems
示例:
•
Be careful when you cross the road.
过马路时要小心。
•
The ice is thin, so be careful.
冰很薄，所以要小心。