直升机 an aircraft without wings that has large blades on top that go round. It can fly straight up from the ground and can also stay in one position in the air.
He was rushed to the hospital by helicopter . 他由直升机火速送到医院。
直升机 A helicopter is an aircraft with long blades on top that go round very fast. It is able to stay still in the air and to move straight upwards or downwards.