短語詞組短語back wash line 反洗琯線back shoulder line 肩後線back center line 後中線;後中心線back centre line 衙片中心線bring back on line 使複原back seam line 背縫線back neck line 後領(lǐng)圓線back up line 備份線路back spring line 前倒纜 返回 back line