我曾听说过这样一个故事:大卫有两个小孩,一个5岁,一个7岁。有一天,他正在教他7岁的孩子凯利怎样使用瓦斯驱动的割草机割草。他正教孩子如何在尽头把割草机掉头时,妻子叫他去问事情。当大卫转身回答问题时,凯利把割草机推到草坪边的花圃上……大卫回头发现发生的事之后,他开始失控了。 I have heard of such a story: David has two children, one is 5 years old and one is 7 years old. One day he was teaching how 7-year-old child Kelly cut the grass using a gas powered lawn mower. He was telling his children how to turn the lawn mower down at the end when his wife told him to ask questions. As David turned to answer the question, Kelly pushed the lawn mower to the flowerbed by the lawn ... After David turned around to find out what happened, he started out of control.