L Oxygen is circulated around the helmet to stop the visor misting.

头盔内有氧气循环流动，除了供氧，还可以防止面罩雾化。

youdao

Please stop changing the google logo so much l like the original one.

别总变换谷歌的图标，我还是喜欢原来的那个。

youdao

Please stop changing the google logo so much l like the original one.

别总变换谷歌的图标，我还是喜欢原来的那个。

youdao