hard-set变: become different; change坚固: firm; solid; sturdy; strong的: 4次方是 The fourth power of 2 i ...变坚固: indurate; solidify; strengthen使变坚固: firm下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:变坚固的，即可在微信中查询翻译
