loxygen

例句：

1. 1. The lungs need oxygen to function properly.
   肺部需要氧气才能正常运作。
2. 2. Oxygen is essential for life.
   氧气对生命至关重要。
3. 3. The scientist used a special machine to extract oxygen from the air.
   科学家使用一种特殊的机器从空气中提取氧气。