英语词汇“be hard at it”的翻译、意思、用法、释义-英汉双解词典-注文网

单词	be hard at it
释义	be hard at it 专心致志于…,刻苦钻研
随便看	closed type feed water heater closed type formula closed type fuel valve closed-type fuel valve closed type generator closed-type heater closed type heater closed-type hot-water heat-supply network closed-type hot-water heat-supply system closed-type hydraulic system closed type hydraulic system closed type motor closed-type motor closed type nozzle closed type power fluid system closed-type screen closed type screen closed-type single action crank press closed type single action crank press closed type single point press closed-type slot closed type square closed type thrust bearing closed type track circuit closed type valve 开国元老开国功臣开国承家开基创业开基立业开天辟地开宗明义开山始祖开山祖师开山老祖ちるどれんちれいちれい【地霊】ちれきちれき【地歴】ちろりちろり【銚釐】ちろりあんはっとちわちわ【痴話】