The ship was buried, beyond retrieval, at the bottom of the sea.
船已葬身海底，无法打捞。
《牛津词典》
2
If mail order catalogs are your weakness, take them out to the garbage and push them down to the bottom to head off a middle-of-the-night retrieval.
如果邮购目录是你的弱点，把它们扔到垃圾箱底以防自己半夜再把他们找回来。
3
DRIS is a hierarchical distributed Internet information retrieval system. It can provide a set of information resources integration solution from the bottom layer to application layer.