求翻译：这是因为罐头是密封的，细菌便无法进入。人们在制造罐头食品的时候，把罐头里的空气全都抽出，然后把它封口。在没有空气的情况下，即使里面的食物沾上少许细菌，它们也无法生存或繁殖啊！是什么意思？

This is because the can is sealed, the bacteria can not enter. People in the manufacture of canned foods, all the cans out of the air, then seal it. In the absence of air in the case, even a few bacteria inside the food from being contaminated, they can not survive or reproduce ah!

This is because canned food is sealed, the bacteria will not be able to enter. It is in the manufacture of canned food, canned food, when the air were all drawn out, and then seal it. In the circumstances, even if there were no air inside a little bit of food stained with bacteria, they are also abl

This is because the canned food is the seal, the bacterium is then unable to enter.People in manufacture canned food time, all extracts the canned food in air, then its seal.In does not have in the air situation, even if inside food stains the little bacterium, they are also unable to survive or the

This is because cans are sealed, the bacterium is unable to enter. When people in the manufacture of canned food, were all out in a can of air, and seal it. In the absence of air situation, even if the food inside is covered with a few bacteria, they also cannot the existence or propagation is!

This is because cans are sealed, the bacterium is unable to enter. When people in the manufacture of canned food, were all out in a can of air, and seal it. In the absence of air situation, even if the food inside is covered with a few bacteria, they also cannot the existence or propagation is!