| 释义 |
useful/ˈju:sfʊl, -f(ə)l/adj. 1a of use; serviceable 有用的；可用的；实用的 b producing or able to produce good results 有效的；有帮助的；有益的 gave me some useful hints 给我些有用的提示 2 colloq. highly creditable or efficient [口]值得高度赞扬的；非常得力的 a useful performance 出色的表演 □ make oneself useful perform useful services 帮忙，做些有用的事 □ usefully adv.□ usefulness n. |