英语单词短语词组“be-on-about”的中文翻译、释义及用法解析-英汉词典

单词	be-on-about
释义	请查阅词条：be on about
随便看	mechanical property mechanical removal mechanical reproduction mechanical seal mechanical shutter mechanical skill mechanical stimulation mechanical stimulus mechanical strength mechanical stress mechanical switch mechanical system mechanical valve mechanical ventilation mechanical watch mechanical wave mechanical-wave mechanical work mechanical-work mechanics mechanism mechanism of action mechanism of evolution rupee rupiah