before sheet选定: designate; selected工作: work; operation; working; op ...表: outside; surface; external之前: before; prior to; ago穴工作表之前: before sheet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:选定工作表之前，即可在微信中查询翻译
