回炉的英文：
melt down
v. 使融化，使溶解，使消散；使融合,使（心等）软化，兑现；融化，溶解，感到极热，消散；融合，软化；（声音）变得柔和
n. 融化；熔化；熔化的金属；熔化量，含奶酪的食品
melt into the background
逐渐消失|渐渐由浓变淡
The act or process of melting.
熔解；熔解的行动或过程
Melt the butter and then blend in the flour.
先把黄油融化，然後加入面粉。
You should melt the sugar in the mouth.
你应使糖溶解在口中。
And the sorrow that you know will melt away.
你内心的悲哀将会消散。
prep. 在…下，沿着
v. 下降，打倒
n. 潦倒；羽绒；丘陵
Down with hegemonism!
打倒霸权主义！
The sun is down.
太阳下山了。
Close down autos and you close down steel and rubber.
关掉了汽车工业你也就关掉了钢铁工业和橡胶工业。
nail down; nail in;hold by
钉住;使人遵守诺言
break down resistance
粉碎反抗，制服反抗