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- Experts believe WNV is established as a seasonal epidemic in North America that flares up4 in the summer and continues into the fall. 专家相信，西尼罗河病毒在北美已经演变成一种季节性传染病，夏天发作，延续到秋天。
- Ornaments,decorated covers, ornaments, decorations, ornaments and seasonal epidemic; There are attractive peerless the rings, earrings, necklaces, bracelets,chains, etc. 饰品涵盖了项饰、手饰、腰饰、及季节性流行饰品等；有精美绝伦的戒指、耳环、项链、手链、脚链等。
- Conclusion Seasonal epidemic of dengue fever was observed the high incidence of dengue fever is associated with the density of mosquito and also the density of the population. 结论登革热具有周期性发病率上升的流行特点，其发病率与当地人群的易感性和蚊媒密度有关。
- Seasonal epidemics occur every year and we are able to treat the virus with seasonal vaccines. 每年都会发生季节性流行病，我们能够针对病毒使用季节性疫苗进行治疗。
- A flu epidemic raged through the school for weeks. 流感在这所学校里蔓延了几个星期。
- The magnitude of the epidemic was frightening. 这种流行病传播范围之广令人惶惶不安。
- Many people died from the smallpox epidemic. 很多人死于天花流行病。
- The village is suffering from a cholera epidemic. 这个村庄正流行霍乱。
- The area is subject to devastating seasonal winds. 这个地区常遭破坏性季风的袭击。
- A raincoat is a must in the rainy season. 在雨季雨衣是必备之物。
- We have stamped out the epidemic. 我们已经把那种流行病根绝了。
- The road is only negotiable in the dry season. 这条道只有在旱季才能通行。
- Winter is the coldest season in a year. 冬季是一年中最冷的季节。
- The mortality wrought by an epidemic. 由一传染病引起的大批死亡
- People found casual or seasonal work on farms. 人们在农场上找到临时的或季节性的工作。
- The bush was planted early on in the season. 树丛在植树季节一到时就种下了。
- The filly has been raced twice this season. 这匹小牝马本季度曾两次参赛。
- Scientists have isolated the virus causing the epidemic. 科学家们已分离出引起这种流行病的病毒。
- The prices of some vegetables vary with the season. 某些蔬菜的价格随季节而变化。
- A word spoken in due season is pleasant. 合乎时宜的一句话，是令人愉快的。
