問題：皮帶的功能有哪些？
What are the uses of a leather belt?
答案帖文：
1935年8月，任弼時（中共第一代領導集體的重要成員）與賀龍（中國人民解放軍主要創始人之一）等人率部長征過草地時，許多戰士因為饑餓昏倒。在找不到任何食物的情況下，任弼時和警衛員將皮帶切成若干段，放到鍋裏煮，每次每人只能分得3小塊。雖然味道難聞、難以下咽，但他們卻風趣地稱為吃“煮牛肉”。
當時的皮帶不是現在經過工業化加工製成的皮帶，而是當年農牧民經過簡單初加工的皮製品，以及原本就是準備在路上充饑的皮帶。
In August 1935, during the course of the Long March, Ren Bishi, one of the first-generation leaders of the CPC (Communist Party of China), and He Long, one of the founders of the PLA (People's Liberation Army), led their troops across arid grasslands. Many soldiers passed out from starvation. Suffering from hunger, Ren and his men had to boil their leather belts for food, and each person only got three small pieces for a meal. Despite the belts' foul smell and yucky taste, they jokingly called them "boiled beef."
Unlike the belts we see today, the leather belts used by the Red Army were simply processed cow skin. Some of them were carried as food for the long journey.