流感病毒B（IFV-B）最为多见,其次为流感病毒A（IFV-A）;IFV-B和IFV-A IgM抗体阳性率在60~69岁年龄组高于≥80岁龄组（P〈0.05）;呼吸道合胞病毒、腺病毒和副流感病毒IgM抗体阳性率在各年...
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The K21 IFV has a 750-horsepower turbo-diesel engine and 40mm auto cannon designed to shoot down slow-moving helicopters and aircraft.
K21步兵战车拥有750马力的涡轮增压柴油发动机和40毫米自动炮，旨在击落缓慢移动的直升机和飞机。
Many of the vehicles included a new digital camouflage pattern, such as a new IFV for the Chinese Marines covered with a blue digital camouflage.
其中许多战车采用了一种新型的数字伪装方法，例如，一种为中国陆军服务的新型步兵战车就用蓝色的数字伪装技术进行了涂彩。
Like the IFV and Riptide, it can also be used as a troop transport, but is much faster since it can fly over cliffs.
像IFV和激流一样，它可以被用作步兵运输工具，不过由于它可以飞越悬崖，速度要快的多。
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