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An SIRS epidemic model with vaccination is investigated in this paper.
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摘要该文讨论了一类带有接种的流行病模型。 |
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An SUV pulls up beside the other trucks. SKINNER is driving. SCULLY gets out of the passenger side and walks up to DOGGETT.
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（一辆SUV听到了其他卡车的旁边。斯金纳在开车。史高丽从乘客位置下车走向道根。） |
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An Ugly Woman Mike: My aunt was very embarrassed when she was asked to take off her mask at the party. Mary: Why was that? Mike: She wasn't wearing one.
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丑女麦克：一次舞会上，当大家要求我姑姑拿掉她的面具时，她非常尴尬。玛丽：为什么会那样呢？麦克：她根本就没有带面具。 |
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An Uprising Halted?
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停止暴动? |
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An X-ray binary system has been formed, and the neutron star has made the crucial second step toward becoming a millisecond pulsar.
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射线双星就这样形成了，于是这颗中子星就向成为毫秒脉冲星迈出了关键的第二步。 |
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An X-ray tuned to the correct energy can knock an electron out of the innermost orbital.
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将X射线调到恰当的能量可以将铁原子最里层轨道的电子振出来。 |
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An XHTML document is validated against a Document Type Definition.
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用文档类型定义来校验一份XHTML文档。 |
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An XML element is everything from (including) the element's start tag to (including) the element's end tag.
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一个XML元素的所有内容是元素的起始标签和终止标签之间的一切内容（起始、终止标签也包含其中）。 |
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An XML parser might have a high megabytes-per-second rate, but if it is expensive to set up and tear down that parser, it will still have a low throughput in requests per second.
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一个XML解析器可能每秒处理的百兆字节量很高，但是如果初始化和关闭该解析器的代价很大，那么它的每秒处理请求数仍旧很低。 |
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An Yuruan Company Charity Websites Orphans Net.
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孤儿网，宇软公司旗下公益网站. |
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An a ignment statement which looks like a comparison.
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一个赋值语句看起来像比较语句。 |
