- and the dolphins block the baitball's retreat.
海豚们锁定了从海面撤退的鱼群 - The dolphins leave as soon as they've had their fill
海豚吃饱后迅速离开了 - and, at last, the mackerel sink below the diving range of the birds.
最后,竹荚鲭也逃出了猛鹱的攻击范围. - As the Sun disappears, a profound change takes place in the ocean.
昼去夜至,海洋发生了另一个重大变化 - Deep water plankton start to rise from the depths and another hungry army prepares to receive it.
深海的浮游生物开始浮上水面, 另一支饥饿的部队准备接受这些猎物 - Every night, wherever conditions are right, countless millions of creatures from the deep migrate to the surface, seeking food.
如果环境适宜, 每天晚上会有无数的深海生物到海面来觅食 - A baby sailfish,
一条小旗鱼
As the Sun disappears, a profound change takes place in the ocean. 昼去夜至,海洋发生了另一个重大变化
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