select all trackers选择: pick and choose; select全部: whole; complete; entire; tot ...追踪: follow the trail of器: implement; utensil; ware选择全部: select all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:选择全部追踪器，即可在微信中查询翻译
