Let fresh air into your room by opening up Windows if it's not too cold and if it's not polluted outside.

如果天气不是太冷又没有污染的话，打开窗户让新鲜空气进入房间。

youdao

The surface suction opening is arranged on a floating body or a ship that is outside the floating rail, especially on a floating type air lift system.

表层水吸水口是安装在浮动围拦外的浮体或船上，尤其是构成浮动式气提 系统。

youdao

And the opening of Gaza International Airport, the Palestinians' air link with the outside world, which was agreed at Wye, is still awaited.

ECONOMIST: Palestinians get their wings