1. 探究;钻研
If you delve into something, you try to discover new information about it.

2. (在壁橱、袋子等中)搜寻，翻找
If you delve inside something such as a cupboard or a bag, you search inside it.

1. turn up, loosen, or remove earth

e.g. Dig we must
turn over the soil for aeration

Synonym: digcut intoturn over