hardness is not enough lack of rigidity
Perhaps the only trouble with copper is that it is not hard enough for some USES.
就某些用途来说,铜的唯一缺点也许是硬度不够。原文的。
—— 给力词典精选Perhaps the only trouble with copper is that it is not hard enough for some uses.
就某些用途来说,铜的唯一缺点也许是硬度不够。(原文的。
—— 给力词典精选