back-extraction回: circle; wind提取: draw; pick up; collect博落回提取物: macleaya cordata extract alkaloids sanguinarin; plum poppy p.e撤回提案: withdrawal of proposal撤回提名: withdraw a nomination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:回提取,即可在微信中查询翻译