bottom [ˈbɒtəm] 名词
单语范例（未经PONS编辑处理）
The earliest reference to a flat-faced bat (i.e., with a flat surface at the bottom of the stick in ice hockey style) also occurs in 1622.
en.wikipedia.org The race to the bottom becomes a vicious circle with states competing to deregulate even further resulting in major human rights problems.
en.wikipedia.org This line must not be crossed and the serve is played bottom-up.
en.wikipedia.org Spotted eagle rays and southern stingrays are common at the bottom of the channel.
en.wikipedia.org In its upper reaches peaty water flows over a bottom of shingle and rock and is fast flowing.
en.wikipedia.org