求翻译：卜、蔬菜、苹果、饼干和黑豆，食物种类多，营养也就丰富，在吃食方面也很讲究。美国芝加哥动物园里，曾经发生过一件怪事：那儿有52只大袋鼠，突然在一年之内病死了49只！他们赶紧请专家来“会诊”，动物学家研究了袋鼠的饲料，发现草料中缺少钙和一些矿物质，这正是袋鼠生活中所必需的。于是，他们给袋鼠增加了合矿物质丰富的苜蓿、燕麦和各种蔬菜。没出一个月，剩下的三只大袋鼠就恢复了健康。是什么意思？

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The divination, the vegetables, the apple, the biscuit and the black soybeans, food type are many, the nutrition is also rich, is eating the aspect very much to be also fastidious.In the American Chicago zoo, has had a strange event: There is 52 great gray kangaroos, has died of illness suddenly wit

BU and black beans, vegetables, apples, biscuit, food variety and nutrition is rich, in terms of food is also very particular about. United States Chicago Zoo has been a remarkable thing: there are 52 large Kangaroo, suddenly died within a year the 49 only! They requested the expert to "consultation

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