highest attained vacuum

例句：

1. 1.The highest achieved vacuum in space is the International Space Station.
   国际空间站是太空中达到的最高真空。
2. 2. The highest achieved vacuum in the world is at the South Pole.
   世界上最高的达到的真空是在南极。
3. 3. The highest achieved vacuum in the world is at the South Pole, which is also thelowest point on Earth.
   世界上最高的达到的真空是在南极，也是地球上最低点。