DK it can’t be true poo packed withpootastic facts便便的科学书

How is poo made? Poo is made by your body’s digestive system—a set of organs that work together to break down food into molecules your body can absorb.
大便是怎么做的？粪便是由你身体的消化系统产生的，消化系统是一组共同作用将食物分解成你身体可以吸收的分子的器官 In your large intestine, the remains of your food turn into poo. Your large intestine contains microorganisms called bacteria, which help release vitamins and other nutrients from food. They produce the gases that give poo its smell.
在你的大肠里，食物的残渣会变成粪便。你的大肠中含有一种叫做细菌的微生物，可以帮助你从食物中释放维生素和其他营养素。它们产生的气体使粪便散发出气味。 It takes 24–48 hours for your digestive system to turn a meal into poo.
你的消化系统需要24-48小时才能把一顿饭变成粪便。 Your stomach wall has folds that allow it to stretch when you swallow a large meal. Inside your stomach, food spends about four hours being churned with acid and digestive juices that turn it into a soupy liquid.
你的胃壁有褶皱，当你吞下一顿大餐时，它可以伸展。在你的胃里，食物被酸和消化液搅拌大约四个小时，这些酸和消化液会把食物变成汤状液体。 Your intestines have muscles that squeeze food and poo to push them along. When they do this, you hear your stomach rumbling.
你的肠子有肌肉挤压食物，并用粪便推动它们前进。当他们这样做的时候，你会听到你的胃隆隆作响。

Pushing out poo uses lots of muscles, including those in your chest! Your chest muscles squeeze your lungs, but the airway that lets air escape shuts. This makes your lungs push down on your intestine.
排便需要很多肌肉，包括胸部的肌肉！你的胸肌会挤压你的肺，但让空气逸出的气道会关闭。这会使你的肺向下压在你的肠道上。