n (1) 牛肉 (flesh of a full-grown ox， bull or cow， used as meat) [U]：～cattle 肉用牛;prefer～to pork 喜欢吃牛肉胜过猪肉;～stew 炖牛肉;～sandwiches牛肉三明治;a joint of roast～一大块烤牛肉;

(2) 肉用牛 (any form of cattle，esp ox， etc raised for meat) [C];

(3) 肌肉;臂力 (human strength or muscles) [U] (infml)：Come on， man， put some～into the job! 喂，老兄，卖点力气干! He has a lot of～on him.他身上肌肉鼓鼓的。

(4) 牢骚 (complaint) [C] (sl)：She's got a lot of～s about her boss.她对老板满腹牢骚。

→′beefy adj 强壮的;′beefburger n 汉堡包;′beefsteak n 牛排;͵beef′tea n 用牛肉做成的浓汤;

vi发牢骚 (complain in an annoying way) [I， I+prep(about)](sl)：What are you～ing about now? 你在发什么牢骚?～about pay 因报酬发牢骚;

beef up (v adv) (AmE) (infml) 增强;加重 (vt)：We must～up the army with new young soldiers. 我们必须补充新兵以增强军队的实力。