rick Rahim, from virginia, flies helicopters for a living, and when his seven-year-old son's tooth became loose he did not waste time by tying it to a door handle.
2019年6月四级真题（第二套）听力 Section A
The Tunisian military has sent reinforcements and helicopters to the area.
2016年12月四级真题（第二套）听力
柯林斯高阶英汉双解学习词典释义
N-COUNT
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.