It also initiated its first-ever air pollution red alert mechanism.

它还启动了首个空气污染红色预警机制。

youdao

I'll play out in the open air, I will be alert and kind and fair.

我要在户外多玩耍，变得机灵友善又美丽。

youdao

I'll play out in the open air, I will be alert and kind and fair.

我要在户外多玩耍，变得机灵友善又美丽。

youdao