Translate the following sentence into English.
如果你看到一个一两岁的孩子学做一件事的乐趣， 你就会明白人类学习的意愿有多强。
【正确答案】：
LOOK AT THE DELIGHT A ONE-OR-TWO-YEAR-OLD CHILD TAKES IN LEARNING AND YOU WILL SEE HOW POWERFUL IS THE HUMAN WILL TO LEARN.
【题目解析】：
考点：一两岁的孩子a one-or-two-year-old child；乐趣pleasure／delight；学习意愿will to learn。