A swimming pool that drains to reveal a helipad?排干水后成为直升机停机坪的游泳池?...

n.直升机起飞及降落场，直升机停机坪...

helipad的音标：helipad的英式发音音标为：['helipæd]helipad的美式发音音标为：['hɛləˌpæd]...

helipad的复数形式为：helipads...