arm-stretcher唱: sing臂: arm伸缩: stretch out and draw back; e ...器: implement; utensil; ware伸缩器: compensator; expa ion piece; expansion piece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:唱臂伸缩器,即可在微信中查询翻译