A helicopter is an aircraft with long blades on top that go around very fast. It is able to stay still in the air and to move straight upward or downward. 直升机
noun [专属名词]直升机
The helicopter rose into the air. 直升机升上了天空。
verb [vt. 及物动词]用直升机运送;乘直升机飞至(某地)
They were eventually rescued by helicopter. 他们最后被直升机救走了。