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一些物品上有着不起眼的小孔,不起眼得使我们从来没有过多地关注或者仔细观察它们。甚至,有的人不知道它们的存在。别小看这些小孔。它们看似默默无闻,但用处可大了,里面还蕴含着科学道理。有些小孔在关键时候能救人一命。
Some items have insignificant holes that make us never pay too much attention or look closely at them. Even some people do not know their existence. Do not underestimate these holes. They seem obscure, but the usefulness is great, which also contains scientific truth. Some holes at a critical time can save lives.