孩子的复数

The two groups of children have quite different characteristics.
这两组儿童具有截然不同的特点。
Children usually transfer to secondary school at 11 or 12.
儿童通常在11或12岁时升读中学。
It's only human to want the best for your children.
为自己的孩子谋求最好的条件是人之常情。