乌黑鹱在新西兰与阿拉斯加之间来回迁徙，期间飞行的距离几近40000英里；而红宝石喉蜂鸟在跨越墨西哥湾的途中，能够连续不停地飞行20小时。
Sooty shearwaters log almost 40, 000 miles migrating from New Zealand to Alaska and back, while ruby-throated hummingbirds can fly 20 hours without stop migrating across the Gulf of Mexico.
连续吃奶（非常频繁到不停地吃奶）几个小时，通常在每天的晚上。这可能与大部分宝宝在最初的几个月都会有的“烦燥时间”的存在有关。
Cluster nursing (very frequent to constant nursing) for several hours—usually evenings—each day. This may coincide with the normal "fussy time" that most babies have in the early months.
连续吃奶（非常频繁到不停地吃奶）几个小时，通常在每天的晚上。这可能与大部分宝宝在最初的几个月都会有的“烦燥时间”的存在有关。
Cluster nursing (very frequent to constant nursing) for several hours—usually evenings—each day. This may coincide with the normal "fussy time" that most babies have in the early months.
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