n.存在；生存

The newspaper ceased to appear after an existence of three months. 該報(bào)發(fā)行3 個(gè)月后停刊了。

According to some philosopher, everything in existence is reasonable. 某位哲學(xué)家認(rèn)為，存在的事物都是合理的。

Pollution poses a threat to the continued existence of this species. 污染對(duì)這一物種的繼續(xù)生存造成了威脅。

n.不存在的事；無(wú)；不存在的東西

n.共存；共處