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

今年30岁的印度人Vidyat Mohan 希望通过可再生能源，让德里及其附近地区的空气重新变得更清洁。

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，让我们的道路更加安全、日常通勤更加有效、 空气更加清洁。

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

但是，它将在不久的将来保持空气清洁。

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。卡车上配备了空气净化器和照明设备，这意味着发动机必须处于运行状态。