concept mode的用法和樣例：
例句
- The wheel segments of the car can move separately from the cabin, allowing the car, still an experimental concept model, to sway and swerve, almost like a motorcycle.
這中汽車(chē)的輪子部分可以從車(chē)體單獨移開(kāi)，據承認這種汽車(chē)還是是實(shí)驗性的概念模型，對于搖擺和轉向，就好像摩托車(chē)一樣。
