During this stopover, a six-pound lesser sandhill adds about a pound and a half of fat to its weight.
在中途停留期间，体重不到六磅（约2.72公斤）的沙丘鹤会增加约一磅半（约0.68公斤）的脂肪。
Occasionally she sneaks away into a forest or onto a prairie, sometimes with a few friends, to watch chimps or 43)sandhill cranes or black-footed 44)ferrets and to restore her energy and sanity.
偶尔，珍也会和一些朋友溜到森林里或草原上，去观察黑猩猩、沙丘鹤或黑爪雪貂，借此振作精神，恢复活力。
James knows some sandhill cranes rest in a small water area in the evening.
詹姆斯知道一些沙丘鹤总是在傍晚飞到里面的一小片水域休息。
Sandhill cranes were used in the experiment because whooping cranes are so rare.
先用沙丘鹤做试验，是因为高鸣鹤实在太罕见。
Sandhill cranes were used in the experiment because whooping cranes are so rare.
先用沙丘鹤做试验，是因为高鸣鹤实在太罕见。
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