undertake/ˌʌndə'teɪk $ -dər-/

v. accept responsibility for sth and start doing it

v. [T] 承担，从事，负责：They undertook the task of repairing the damaged road. 他们负责修补受损的道路。

构词under + take

➭ pt. undertook/-'tʊk/

➭ pp. undertaken/-'teɪkən/