They patiently take care of the young whales just under the surface of the water, waiting for the feeding mothers to return.
它们耐心地在水面下照顾幼鲸，等待哺乳期的母鲸回来。
2
Under normal conditions, all of her experimental animals performed rhythmic motor functions such as breathing or feeding movements comparably to one another.
在正常情况下，她所有的动物性实验都利用了有节奏的动作功能，如呼吸或相互喂食的动作。
3
The beetle attacks mature trees only; its larvae ultimately kill the tree by feedingunder its bark.