在一个寒冷的冬天,一支军队来到鸭绿江江畔,准备到河的对面。即使天气非常寒冷,江面上也只是结了一层薄薄的冰,只有五六厘米厚,冰面上还覆盖着一层雪。只有冰层达到七八厘米的时候,人们过河才是安全的。很明显,要是走在这样的薄冰上,是非常危险的。但任务紧急,队伍不能耽搁太久,大家都很着急。这时,一个士兵站了起来,说 On a cold winter, an army came to the banks of the Yalu River and prepared to cross the river. Even when the weather is very cold, the river surface is only a thin layer of ice, only five or six centimeters thick, ice is covered with a layer of snow. Only when the ice reaches 78 centimeters, people cross the river is safe. Obviously, walking on such thin ice is very dangerous. But the task is urgent, the team can not delay too long, everyone is in a hurry. At this moment, a soldier stood up and said