undertake的过去式 undertook；过去分词 undertaken；
undertakev.承担；从事；负责；承诺；允诺；答应
He undertook to edit the text himself.
他答应亲自编辑正文的内容。
Peter Cooke undertook to send each of us a sample contract for perusal
彼得·库克答应给我们每人寄送一份合同样本供阅读。
The lawyer undertook the case.
该律师经手承办这宗案件。
