即使是最小的婴儿也能通过声音认出自己的母亲。

Even the smallest baby can ___identify its mother by her voice.

我们的老师仅仅两天后就能认出每一个学生。

Our teacher could ___identify every student after only two days.

孩子们可以在动物园学会识别许多动物。

Children can learn to ___identify many animals at the zoo.