英语翻译1.The upper parts of birds are darker in color than unde

英语翻译1.The upper parts of birds are darker in color than under parts.（是“居住在高处的鸟颜色比居住在低处的鸟深”还是“鸟身的高处部分颜色比低处部分深”?）2.All we can do is to try to find a few results that hold true for most birds.拜托…拜托别去网络翻译器翻译，以前查的很多不准确，T