arming barrier枪: spear的: 4次方是 The fourth power of 2 i ...保险: insure; guarantee; insurance器: implement; utensil; ware起动注油器的保险器: primer lock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:枪的保险器，即可在微信中查询翻译
