预约成功
特别推荐：2014年成人英语三级保过套餐
existence
n.存在;生存
用作名词 (n.)
The newspaper ceased to appear after an existence of three months.
该报发行3 个月后停刊了。
According to some philosopher, everything in existence is reasonable.
某位哲学家认为，存在的事物都是合理的。
Pollution poses a threat to the continued existence of this species.
污染对这一物种的继续生存造成了威胁。
编辑推荐：
