coasters
n. 杯垫；航海者（coaster 复数）
例句
The table mats and coasters have a non-slip, soft green backing.
这些桌垫和杯垫下都有一层绿色防滑软衬。
《柯林斯英汉双解大词典》
Why do we like roller coasters?
为什么我们喜欢过山车？
Think of theme parks and you think of roller coasters.
一提到主题乐园，你马上想到的云霄飞车。
