under the hood片语KK [ˋʌndɚ ðə hʊd] /ˈʌndɚ ðə hʊd/发音片语1内部运作、底层、幕后口语The app looks the same, but a lot has changed under the hood.这个应用程式看起来没变,但底层改动很多。2引擎盖下、引擎部分美式He opened the car and poked around under the hood for ten minutes.他打开车子,在引擎盖下摸索了十分钟。形容词1内部的、底层的This release is mostly under-the-hood improvements to speed and security.这个版本主要是速度和安全性方面的底层改进。用这个字练口说→