MERV等级可以让你知道当花粉和霉菌在空气中传播时，过滤器将如何将之过滤。
A MERV rating tells you how well the filter can remove pollen and mold from the air as it passes through.
烤牛肉诱人的香味弥漫在空气中。
我可以在空气中闻到它。
当有人打喷嚏或咳嗽时，病毒可以在空气中传播一米远，所以你在与感冒患者交谈时最好站在适当的距离。
When someone sneezes (打喷嚏) or coughs, the viruses can travel as far as one meter through the air, so you'd better stand a proper distance while talking to someone who has a cold.
有趣的是，这些流体动力学的适应性变化和人类为了改进高速飞机在空气动力学方面的设计特点十分相似。
Interestingly enough, several of these hydrodynamic adaptations resemble features designed to improve the aerodynamics of high-speed aircraft.
牛顿发现了在空气中恒温声音的速度。
Newton had discovered the isothermal velocity of sound in air.
浓烟罩住了画，弥漫在空气中。
他在空气中。 他在除草剂桶中。
And he was in the fish, and in the air, and in the barrels of weedkiller.
鉴于在空气中的稀释，室外的氡水平通常很低。
Due to dilution in the air, outdoor radon levels are usually very low.
但这里非常小，这也就是为什么，在空气轨上做实验。
But there's very little, and that's why these experiments are done on these air tracks.
氚发出的辐射很弱，在空气传播不远，不能穿透皮肤。
Tritium emits a weak form of radiation that does not travel very far in the air and cannot penetrate the skin.
研究人员用一个强大的激光发射器在空气中制造出水滴。
Using a powerful laser, researchers have created water droplets in the air.
人群似乎充满了整个城镇，省市的声音也在空气中传播。
The crowd seemed to fill the entire town and the sound of hymns rose into the air.
我妈妈总是尽量让我使用茶巾，但是它们总是消失在空气中。
My mom keeps trying to give me tea towels, but they have a way of disappearing into thin air.
小飞机可以在空气中飞翔，但是不能行驶在大街上。
Tiny planes work well in the air but don't have the chops to handle the street.
举个例子，我有这样一个心理图示，放置在空气中的物体会降落。
For example, I have a mental schema that suggests that things fall when left in middle air.
当炮弹在空气中运动的时候,其上升和下降的曲线形状几乎一样。
The shape of the curve when its falls is almost the same as the shape of the curve when its goin up into the air.
病毒和细菌也可通过咳嗽或喷嚏在空气中产生的飞沫传播。
They may also spread via air-borne droplets from a cough or sneeze.
在西非沿海调查的研究者们在空气中检测的高度的氯联苯。
Researchers cruising off the western coast of Africa have confirmed the presence of mysteriously high levels of airborne toxic polychlorinated biphenyls (PCBs).
相信我，你的想法就像闪烁在空气中一样，他一定会读懂的。
Trust me, he'll read your thoughts like they're projected above your head on a wide-screen.
一丝发抖的声音，在空气中愈颤愈细，细到没有，周围便都是死一般静。
A faint, tremulous sound vibrated in the air, then faded and died away. All around was deathly still.
接下来在空气中添加湿气，很简单地再炉子上放一个大的水壶并且让它沸腾。
Follow up adding moisture to the air by simply placing a large pot of water on the stove and letting it simmer.
食物可以在空气、过热蒸汽、真空、惰性气体中干燥，可以用直接加热干燥。
Foodstuffs may be dried in air, superheated steam, in vacuum, in inert gas, and by the direct application of heat.
在空气中上升后，它在一幢几层楼高的建筑物的窗前停止升高，进入盘旋状态。
After rising through the air it stops to hover outside the window of a building several storeys high.
在空气中的激发态水分子放射出微波从而刺激邻近的水分子放射出更远的微波。
Excited water molecules in the air emit microwaves thatthen stimulate the emission of further microwaves by their neighbours (this ishow a laser works).
教堂的歌声和钟声弥漫在空气中，乞丐乞求帮助的声音也充斥在空气中。
Religious singing and church bells felled the air, as did the cried of the beggars asking for help.
在温暖的天气里，企鹅会腹部着地躺着，竖起翅膀，把脚在空气中挥舞。
On a warm day, penguins may lie on their stomachs, flippers raised, feet waving in the air.
在温暖的天气里，企鹅会腹部着地躺着，竖起翅膀，把脚在空气中挥舞。
On a warm day, penguins may lie on their stomachs, flippers raised, feet waving in the air.
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