天气暖洋洋的，整个下午都可以在户外。

It was warm enough to be outdoors all afternoon.

《柯林斯英汉双解大词典》

我们被迫在户外天寒地冻的环境下工作。

We were forced to work outside in freezing conditions.

《牛津词典》

体温过低症在那些露宿户外的流浪汉中很普遍。

Hypothermia is common among tramps sleeping outdoors.

《柯林斯英汉双解大词典》

There's a lot of Christian churches where you can't get married in the outdoors, that's not an official way to get married.

有许多的基督教教堂,不允许在户外举行婚礼，在户外的婚礼并不代表正式结婚。

普林斯顿公开课 - 人性课程节选

Actually, I suppose to get ideally married under the open sky, under a Chuppah, gather people under the open sky.

实际上，我理想中的婚礼就是,在户外的天空和犹太传统的彩棚下进行，人们聚集在蓝天下。

普林斯顿公开课 - 人性课程节选

Now, normally that's a good thing because if you're out in the world and you get infected with adenoviruses you recover from it, your immune system can get rid of it.

通常情况下这是好事,这可以让暴露在户外的你,免于腺病毒的侵害,你的免疫系统可以清除病毒

耶鲁公开课 - 生物医学工程探索课程节选