評論
打印
Flatulence, or passing gas, is a normal daily phenomenon.
脹氣，或者放屁，是正常的日常現象。
Most individuals, yes, that includes you,
大多數人，是的，這包括你，
will make anywhere from 500-1500 milliliters of gas and can pass gas ten to twenty times a day.
每天將會產生500-1500毫升的氣體并且每天會放十次到二十次的屁。
But where does this bodily gas come from?
但是身體里的氣體從哪里產生的呢？
A small proportion may come from ingesting air during sleep, or at other times,
小部分的氣體可能來自于在睡眠或其他時間吞入的空氣，
but the majority of gas is produced by bacteria in our intestines as they digest parts of food which we cannot.
但是大部分的氣體，是由我們腸道里的細菌產生的，因為他們可以消化部分我們無法消化的食物。
Our intestine is home to trillions of bacteria living in a symbiotic relationship with us.
我們的腸道里住著上億萬的細菌,它們和我們是共生的關系。
We provide them with a safe place to stay and food to eat.
我們為他們提供了安全的居住環境和吃的東西。
In exchange, they help us extract energy from our food, make vitamins for us, like vitamin B and K, boost our immune system,
作為交換，他們幫助我們從食物中提取能量，為我們制造維他命，例如維生素B和維生素K，增強我們的免疫系統，
and play an important role in gastrointestinal barrier function, motility and the development of various organ systems.
并在腸屏障功能，胃腸運動及各器官系統的發展中發揮重要作用。
Clearly, it's in our best interest to keep these bacteria happy.
如此可見，我們最好讓這些細菌快樂的生活下去。
Gut bacteria get their nutrition primarily from undigested food,
腸道細菌主要從未消化的食物里取得營養，
such as carbohydrates and proteins, which come to the large intestine.
像到大腸里的碳水化合物和蛋白質，
They ferment this undigested food to produce a wide range of compounds, such as short-chain fatty acids and, of course, gases.
他們將未消化的食物發酵從而產生一系列的化合物，例如：短鏈脂肪酸，當然，還有氣體。
Hydrogen and carbon dioxide are the most common gaseous products of bacterial fermentation, and are odorless.
氫和二氧化碳是最常見的細菌發酵的氣體產物，并且他們是無味的。
Some people also produce methane due to specific microbes present in their gut.
由于有些人腸胃里有某種特定的微生物，他們還會產生甲烷。
