(1)使(金属)回火(harden，strengthen (a material，esp a metal) by heating;alternate heating and cooling)[T+n]：～ed steel 回火钢;a new process for～ing steel 炼钢的新流程;

(2)使缓和，软化，调合(soften or make less severe)[T+n，T+n+prep (with)]：～justice with mercy 情法兼顾;Mother tried to～Father's anger with soothing words. 母亲尽力用安慰的话使父亲消气。 He tried to～his refusal with a smile. 他尽力用微笑使自己的拒绝显得温和些。The heat of the summer here is～ed by pleasant wind. 惬意的风缓和了这里夏季的酷热。〖同〗soften，weaken