If air gets in bag, let it out.
如果袋中产生了气体，开袋放出来。
If air were a good conductor of heat, we should be burned.
要是空气是好的导热体，我们就会被烧死。
If air leak happens in the ISS, what emergency actions will be taken?
如果在空间站发生泄漏，你们会采取怎样的紧急措施？
If air conditioner can operate, please operate it to dry the machine.
若空调设备可运作，请打开确实干燥机台。
Raise concerns with the crew if air circulation is shut off for an extended period.
如果机舱内空气长时间不流通，可以向机组人员提出你的顾虑。
If the fresh air agrees with me, I may go out every day.
如果新鲜空气适合我，我可能会每天出去。
If it were not for the vapour in the air, there would be no dew.
如果空气中没有水气，就没有露水。
I love fresh air if you don't mind.
如果你不介意的话，我想要些新鲜空气。
We will use air power to protect UN peacekeepers if necessary.
必要时我们会动用空军力量来保护联合国维和部队的安全。
Even if polluted air does not kill us, it can make us very sick.
即使污染的空气不会杀死我们，它也会使我们生重病。
As if in answer to his request, the air was rent by the most tremendous crash he had ever heard.
仿佛是应了他的请求，空气中响起了他所听到过的最大的轰隆声。
If a train entered the tunnel, it would draw in fresh air behind it.
如果有一列火车开进隧道，它就把新鲜空气随之抽了进来。
If there should be no air, there would be no living things.
如果没有空气，就不会有生物。
If the air is blocked, the fan will turn, but not blow air.
如果空气回流受阻，那么风扇会转，却不会吹动空气。
That never changes if there is no air drag or air friction of any kind.
它未曾变过,如果没有空气阻力,或任何摩擦力。
If it's air and you move through air, - you feel the wind through your hair — that's a drag force.
如果你穿过空气，会感觉风吹过你的头发-，这便是阻力。
So if a spider is spinning a web, the air must be dry.
因此如果你看见一只蜘蛛在织网，那么空气一定是干燥的。
Do you think I should go by train or by air? W: I think the best way is to take the coach if you're not in a hurry.
女士建议说：如果你不着急的话我想最好的方式是乘长途汽车去。
You should not run outside if the air pollution is serious where you live.
如果住宅周围的空气污染很严重，就不要出去跑步。
B: in five working days, if we ship by air.
B：如果空运的话，五个工作天内可以到。
If the temperature reading is above the set point, turn on air conditioning.
如果温度读数高于设置点，那么打开空调。
Yet it can also help them if they come up for air some time and see the big picture - and maybe find they were digging in the wrong place...
况且，如果他们因为从繁琐细节之中抽身，站在全局的角度看待自己谈论的问题——说不定他们会发现自己一直在错误的方向钻研（悲剧……），这样也算帮助到他们了。
The driver said if I was cold he could turn the air down.
司机说如果我觉得冷，他可以关掉空调。
The airplane dissolves into thin air, as if erased by an invisible hand.
飞机如同无形的手划过稀薄的空气。
If a coil has no metal core it has an air core.
如果线圈没有金属芯子，它就有一个空气芯子。
If the air in the room is too dry, buy humidifier.
当然如果室内空气太干燥，可以用点加湿器。
If the air in the room is too dry, buy humidifier.
当然如果室内空气太干燥，可以用点加湿器。
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