expendable buoy不: a block of wood回收: retrieve; recover; reclaim; ...的: 4次方是 The fourth power of 2 i ...浮标: buoy; staff float; drogue; d ...不回收的: expendable; non-recoverable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:不回收的浮标，即可在微信中查询翻译
