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digestion是什么意思，digestion翻译
Digestion is the process by which the body breaks down food into simpler substances that can be absorbed and used for energy, growth, and repair. It is a complex process that involves the coordination of various organs, including the mouth, esophagus, stomach, small intestine, and large intestine.
The process of digestion begins in the mouth, where food is broken down into smaller pieces by the teeth and mixed with saliva, which contains enzymes that begin to break down carbohydrates. The food then travels down the esophagus, a muscular tube that connects the mouth to the stomach. The esophagus uses rhythmic contractions, known as peristalsis, to push the food down into the stomach.
In the stomach, food is mixed with gastric juices, which contain enzymes and hydrochloric acid, to further break down the food into a semi