n.浮标；浮筒；救生圈；救生衣
v.使浮起；支持；鼓励；用浮标指示
The can buoy was submerged underwater. 罐状浮标没于水下。
At turns, everybody bunches up as close to the buoy as they can. 在转弯的地方，大家都尽可能往浮标的地方挤。
A tail buoy is connected to the far end of the cable. 电缆的末端与一个尾随浮筒相连。
Take a life buoy with you when you go swimming. 下午去游泳的时候把救生圈带上。
What makes the life buoy move? 什么东西使救生圈移动？
