Krebs hypothesizes that the herons in smaller flocks are watching for herons that they might follow to better feeding pools, which usually attract larger numbers of the birds.
克雷布斯假设,小群的苍鹭是在观察,它们可能会跟随被观察的苍鹭去更好的觅食池,那里通常会吸引更多的鸟类。
"The crusade was part of a larger effort to bring a better life to the people," says Cleland.
克莱兰说:“要给人民带来更好的生活,需要付出巨大的努力,这场斗争是其中一部分。”
The larger the difference, the better.
差别越大越好。
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