现在市场越做越大，出现了冬季与夏季两场户外展会。
Now the market is much bigger, coming out the winter outdoor fair and summer outdoor fair.
研究同样表明，那些突然发生的1型糖尿病的新案例，大多出现在冬季，由于与夏季相比，周围的阳光照射较少。
Studies have also shown that new cases of type 1 diabetes crop up more often in winter, when there is less sunshine all around, than in summer.
与白昼和黑夜的时间长度密切相关的是一年中的四季变化，最明显的是夏季和冬季的差别。其原因是太阳的光照和温度在同时发生作用。
Intimately connected with the length of day and night are our seasons, especially summer and winter; for together with the sun's light heat is also called forth.
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