EXTRA HEAVY DUTY, SINGLE NEEDLE LOCKSTITCH, UPPER AND LOWER FEED WITH REVERSE STITCHING, BIG SHUTTLE HOOK SEWING MACHINE.是什么意思_EXTRA HEAVY DUTY, SINGLE NEEDLE LOCKSTITCH, UPPER AND LOWER FEED WITH REVERSE STITCHING, BIG SHUTTLE HOOK SEWING MACHINE.在线翻译_英语_读音_用法_例句