1、under + take.
2、身在其中担任、掌握(take, hold)什么;当然,只有身在其中才能去担任、掌管什么东西了。
3、At here, the under is not the usual word meaning "beneath," but from Old English under, from PIE *enter- "between, among". 另见:understand.
4、undertake => 过去式:undertook.
双语例句
1. She was secretly vetted before she ever undertook any work for me.