highest level in the world的用法和樣例：
例句
- You set a milestone for Chinese swimmers in the middle distance swimming to be ranked the world top level.
你建立了一個里程碑，表明了中國游泳在中長距游泳比賽中已達到世界最高水平。 - But Arab countries already have the lowest employment rate in the world and one of the highest rates of youth unemployment, with about one in five young people out of work.
但阿拉伯國家的雇傭率已經是世界最低水平，而且年輕人的失業率也是世界最高水平之一，幾乎每五個年輕人中就有一個失業。
