英语词汇“Why are you so down in the mouth”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	Why are you so down in the mouth
释义	Why are you so down in the mouth 不过；你为什么这么没精打采的?
随便看	heat and moisture coupled transfer heat and moisture coupling transfer heat and moisture exchanger heat and moisture exchanger filter heat and moisture insulating heat and moisture model heat and moisture performance heat and moisture test heat and moisture transfer heat and momentum transfer analogue heat and mpbture exchanger heat and power heatand power cogeneration heat and power cogeneration heat and power design heat and powereogeneration heat and power load heat and power plant heat and power station heat and power supply Heat and Radiation Shield System heat and reheat steam temperature heat-and-serve Al-foil container heat and smoke detector heat and stable stability