知識+
有關海嘯的英語短評
... tsunamis are caused by earthquakes without warning. "Building a Tsunami Warning System "...
有關without的文法?
... example: Looks without seeing It happens suddenly without warning. I will not go out with you without asking my parents...
天有不測風雲; 人有旦夕禍福英文
Storms gather without warning and misfortune befalls men overnight.