The fox and grapes

The hungry fox saw a grape hung on the grapes, mouth watering, want to pick to eat, but again

Pick less than. Look for a while, helplessly walked, he swung himself comfort own, said: this isn't ripe grapes, sure

They are sour.

This means that some people capacity small, do not you, just excuses said timing immature

狐狸和葡萄
饥饿的狐狸看见葡萄架上挂着葡萄，口水直流，想要摘下来吃，但又 摘不到。看一会儿，无可奈何地走了，他边走边自己安慰自己说：“这葡萄没有熟，肯定 是酸的。”
这就是说，有些人能力小，做不成事，就借口说时机未成熟。