vi.消失；不見；失蹤

The sun disappeared behind a cloud. 太陽消失在一片云后面。

Many beautiful fish are fast disappearing because of the severe pollution. 因?yàn)槲廴緡?yán)重，許多美麗的魚類正在面臨絕種。

My wallet has disappeared from the table. 我放在桌子上的錢包不見了。

I saw her step the street and disappear into the post-office. 我看見她在街上步行，進(jìn)了郵局就不見了。