互惠共生的另一个例子是在中美洲和南美洲生长的牛角相思树。
Another example of mutualism would be the bull's horn acacia tree, which grows in Central and South America.
“跑步机综合症”可能带来的浩劫，在中美洲棉农身上已经得到了很好的体现。
The havoc that the "treadmill syndrome" can bring about is well illustrated by what happened to cotton farmers in Central America.
扁斑奎蛇在中美洲和南美洲土生土长，并有着各种颜色，其中包括惹眼的黄色。
Eyelash vipers are indigenous to Central and South America and come in a variety of colors, including shocking yellow.
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