短語詞組短語to sign up for 選課sign up for inform 探詢sign up for 報名參加;選課;登記報名Sign up for conferences 報名參加會議;為會議;為會議簽署;注冊為會議sign up for training 報名參加培訓(xùn)sign language for education 教學(xué)手語Sign up for a 申請一個吧Sign convention for torque 扭矩符號的規(guī)定Sign Up for Newsletter 登記郵件列表 返回 sign for