1. When we exhale we expel air from our lungs.
当我们呼气的时候,肺将空气排出体外。

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2. When we exhale we expel air from our lungs.
空气从肺部排出来。

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3. Fill the syringe with solution, attach the needle and expel air.
注射器吸满漱口液,接上针头,排出注射器内空气。

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4. The bacteria are spread into the air when infected people talk or expel air suddenly.
当被感染人群说话或突然呼气时,这种病菌就被传播到空气中。

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5. To expel air from the lungs suddenly and noisily, often to keep the respiratory passages free of irritating material.
从肺里突然的带有声响地排出气体,通常为了使呼吸道不受物质阻碍。

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6. Once stimulated, these muscles go to work and cause us to forcefully expel air from the mouth and nose. Or, in other words, we sneeze.
这些肌肉一旦被刺激,它们就会运动,导致我们强有力的排出口腔和鼻子里面的空气。或者,换句话说就是打喷嚏。

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7. COPD-related tissue damage can also make it particularly difficult to expel air from the lungs, which can make you feel short of breath.
COPD相关的组织损伤也能导致肺排气显著的障碍,从而使人感觉呼吸短促。

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8. When people cough and sneeze, they expel tiny droplets into the air. These infected sprays can travel several feet, and enter the body through the nose or mouth.
当人们咳嗽、打喷嚏的时候,会有微小的飞沫排到空气里,这些被感染的飞沫可以传播好几英尺远,然后通过鼻子或嘴巴进入人体。

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9. English speakers breathe from deep in the diaphragm and expel the air in a steady stream while speaking, thus allowing for linking to take place.
英语母语的人比较注意深度呼吸,长而稳定的气流,注重连词。

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10. The power stroke "uses up" the gas, so means must be provided to expel the burnt gas and recharge the cylinder with a fresh petrol-air mixture: this control of gas movement is the duty of the valves;
作功冲程耗尽了所有的气体,这样就必须采取相应的措施排出废气以及向气缸内再充入新鲜的可燃混合气:气体的运动由气门来控。

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11. Since it can expel grime air and increase oxygen-rich air automatically, people do not need to open Windows to get fresh air, so it reduced the dust and avoid mosquito invasion in door.
排出污浊空气,增加富氧空气。从此不必开窗,减少了灰尘入户,避免了蚊虫侵扰。

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12. To expel a current of air, AS from the mouth or from a bellows.
从嘴或风箱中往外送气。

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13. To expel a current of air, AS from the mouth or from a bellows.
从嘴或风箱中往外送气。

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