有一种鸟叫做牙签鸟,凶猛的鳄鱼好像对这种鸟很友善。原来,强大的鳄鱼的牙缝里有很多食物残渣,鳄鱼张开大嘴,任凭牙签鸟啄食。牙签鸟为鳄鱼清理牙齿,既填饱了肚子,又帮助了鳄鱼。生活中,乐于助人,就会得到更大的快乐。但不是每个人都会热心帮助 There is a bird called a toothpick bird, a ferocious crocodile that seems to be very kind to the bird. The original, powerful crocodile’s teeth in a lot of food debris, crocodile open mouth, despite the toothpick bird pecking. Toothpicks cleaning teeth for the crocodile, both filled the stomach, but also helped the crocodile. In life, helpful, you will get more happiness. But not everyone will be helpful