coaster

UK:  ['kəʊstə(r)]

US:  ['koʊstər]

复数：coasters  

n.

1.(自行车)前叉放脚处

2.〔海〕沿海航船;〔机〕垫子;超越离合器;惯性运转装置;〔军〕滑行机;滑行导弹

3.(餐桌上放酒瓶的带轮)银盆;(杯盘等的)垫子

4.飞轮

5.沿海船舶

6.沿海贸易船

7.矸石堆拣煤人

8.沿岸贸易[航行]者;沿岸贸易船[航船];沿海居民

9.(儿童的)滑板,橇;滑翔机;滑行者;【军事】惯性滑翔飞弹

1 . He warned that the moment when the tow plane released us would remind me of going over the top of a roller coaster.
汤普森警告我说，当牵引机在空中将我们释放的时候，那感觉就像是坐过山车到了最高点。

2 . The cycle of good and bad fortune is like the rise and fall of a roller coaster: What goes up inevitably comes down.
好运-坏运的周而复始就好像过山车的上升和跌落。上去的必然要下来。

3 . We've all had a roller coaster of a time - with the emotions to go with it.
我们都有了一次宛如坐云霄飞车般的经历，情绪也随之大起大落。

4 . HB: How do you stay grounded and positive when your life has been a bit of a roller-coaster ride the past few years?
在过去的几年中你的生活起起伏伏，你是怎样保持乐观和积极的心态的？（又一个无聊的问题）

5 . The reason the Keepers give the metaphor of a roller coaster is to make sure you think of this in terms of fun.
保管者以过山车的比喻讲出来是为了让你觉得它很有趣。