When summer comes, the air is stuffy and the temperature is so high. Thanks to the invention of air-condition, people are no longer suffer to the hot weather, they can stay at the indoors and enjoy the coolness that air-condition brings. But the problem comes, when people count on air-condition for a long time, their bodies will be weaker. Some people feel dizzy and have no strength to do their work, some people are easy to catch the cold. All of these symptoms are typical illness which is from air condition. Though air-condition brings us comfort, we will get sick if we use it all the time. We need to go outside often, even is hot, what’s more, taking exercise is needed. The natural environment is suitable for us to live in, we can’t count on air-condition for a long time. 當夏天到來的時候，空氣很悶熱，氣溫也很高。多虧了空調的發明，人們再也不用忍受悶熱的天氣，他們可以呆在室內，享受着空調帶來的涼意。但是問題也來了，當人們長時間依賴空調，他們的身體會變弱。一些人感到眩暈，沒有力氣去工作，一些人很容易感冒。所有的這些症狀都是空調帶來的典型病。雖然空調給我們帶來了舒適，但是如果我們長時間使用空調，就會生病。我們需要經常走出室外，即使天氣很熱，也需要參加鍛鍊。自然的環境是最適合我們居住的，我們不能長時間依賴空調。
