... be engaged on 着手(某事), 从事(某事) be engaged upon着手(某事), 从事(某事) be engaged to 同...订婚 ...
权威例句
1.
"We are prepared if called upon to beengaged as we were in Libya, " he said.
NPR: Commander: Contingency Plans Under Way For Syria
2.
The NFL argues that this is the end game the union has wanted all along and they have engaged in sporadic and half-hearted bargaining, only to be able to decertify in March upon a lockout.