1918年的那场流感大流行期间，当病毒首次在春季出现时，引起的症状相对轻微，但是到了那年秋天，它卷土重现时，却来势更猛。
In the 1918 pandemic, the virus was relatively mild when it first appeared in the spring, but it came back with a vengeance in the fall.
1572年11月，这颗超新星首次出现，当时它几乎和金星一样明亮，甚至在白天也能看到。
When the supernova first appeared in November 1572, it was as bright as Venus and could be seen in the daytime.
在全球所有已售出的手机中，10款中有4款是诺基亚的，而由于消费者纷纷地购买iPhone手机，诺基亚上周公布，在十多年里，它首次出现了季度亏损。
Nokia, which makes almost four in ten of all the mobile phones sold worldwide, last week reported its first quarterly loss in more than a decade as its customers defect to the iPhone.
8月在老挝中部，一个孤独的活安南锭角羚被发现——这是自1999年以来它首次在其他地方出现——而后立即被当地居民捕捉。
In August, in Central Laos, a lone specimen was spotted-for the first time anywhere since 1999-and then promptly caged by local residents.
建造丽塔的坎蒂娜在诱惑上是首次出现，一个拥有海滨酒吧氛围的墨西哥餐厅，它更换在绿洲上同一位置是那间海鲜小屋。
Making its debut on Allure is Rita's Cantina, a Mexican eatery with a beach bar vibe. It replaces the Seafood Shack that is in the same location on Oasis.
美国正开始戒除它的外国石油“瘾”：随着油价上涨、节能汽车的推广和大量使用乙醇燃料，进口石油在美国石油消费总量中所占比例自1977年以来首次出现下降。
The US is starting to break its "addiction" to foreign oil as high prices, more efficient cars, and the use of ethanol significantly cut the share of its oil imports for the first time since 1977.
美国正开始戒除它的外国石油“瘾”：随着油价上涨、节能汽车的推广和大量使用乙醇燃料，进口石油在美国石油消费总量中所占比例自1977年以来首次出现下降。
The US is starting to break its "addiction" to foreign oil as high prices, more efficient cars, and the use of ethanol significantly cut the share of its oil imports for the first time since 1977.
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