balance crane有: 5年 fifteen years平衡: balance; equilibrium重: weight的: 4次方是 The fourth power of 2 i ...起重机: crane; derrick; crab; freigh ...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:有平衡重的起重机,即可在微信中查询翻译