If it is displayed on such occasions, do not allow the flag to fall to the ground, but let it be carried high up in the air to form a feature of the ceremony.

如果在这种场合展示国旗，不要让国旗掉到地上，而是让它高高地悬在空中以构成仪式的特色。

youdao

Houses built before 1939 use about 50% more energy per square foot than those built after 2000, mainly due to the tiny cracks and gaps that expand over time and let in more outside air.

1939年以前建造的房屋每平方英尺消耗的能源比2000年以后建造的房屋多50%，这主要是由于微小的裂缝随着时间的推移而扩大，更多的外部空气进入了裂缝。

youdao

The windows were quickly opened, to let in a little fresh air.

窗户很快打开了，好让一点新鲜空气进入。

youdao

Somebody? Wave your hands in the air, Way back in the corner. Can I, can we, let's get the mike.

有人回答吗,请举手,在角落那里,给他麦克风

耶鲁公开课 - 博弈论课程节选

You do not have to wave your hands in the air if you're math phobic, but since some of you are, let me just get you all to take a deep breath.

如果你有数学恐惧症你不必举手示意,既然有人是,那么让我们深呼吸一下

耶鲁公开课 - 博弈论课程节选

So let's think about it. This sucker, Mac AIR what's it got in there? That Air Mac, it's, see, it's got, its go-- my Air Mac, I don't know about John's, his is probably better, mine has 1.8 gigahertz speed.

再让我们来看看这台机器，它是什么配置呢？这台，是的，我的Mac，AIR，我不关心John的,他的可能还更好，我的CPU是1。8G的。

麻省理工公开课 - 计算机科学及编程导论课程节选

There are often multiple 30-minute rounds, with breaks in-between to let the outside air in and drink water.

BBC: The origins of bathhouse culture around the world

Grit can get trapped in the mushrooms' nooks and crannies, so give them a swish in a bowl of cold water, then repeat with fresh water until the water runs clean and let them air dry in a single layer on kitchen towels.

WSJ: Stuffed Morels | Consider This

Bobby V was going to open a window, and let the fresh air rush right in.

WSJ: Bobby Valentine: Back to School��Jason Gay