confidence region置信: believe; confidence; fiducia ...号: howl; yell区域: area; beat; reach; domain; p ...信号区域: signal area机车信号区域: cab signal territory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:置信号区域，即可在微信中查询翻译
