Thirty-year-old Indian Vidyat Mohan is hoping to bring back cleaner air through sustainable energy to Delhi and its neighborhood.

今年30度人Vidyat Mohan 希望通过可再生能源，让德里及其附近地区气重新变得洁。

However, it will keep the air cleaner in the near future.

但是，它将在不久将来保持气洁。

But new technology may help reduce these patterns, rendering our roads safer, our daily commutes more efficient, and our air cleaner.

但是新型技术 可以帮助减缓这些状况，让我们道路安全、日常通勤有效、 气洁。

The piano gets cleaned between lessons. The truck is equipped with an air cleaner and lighting, which means the engine has to be running.

每次课程结束后都会对钢琴进行消毒。卡车上配备了气净化器和照明设备，这意味着发动机必须处于运行状态。