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