这些障碍物对于想要往上游游动的鱼儿来说是致命的。The barriers are lethal to fish trying to swim upstream.很难判断是谁给了致命的一击。It is impossible to say who struck the fatal blow.医疗当局对其病因及有多致命都还不甚了解。Medical authorities were baffled, both as to its causes ...
American shares rose, on average, by 38%...美国股票价格平均上涨了38％。Puerto Rico, though it calls itself a Commonwealth, is really a self-governing American colony.波多黎各尽管自称共和国，但实际上是有自治权的美国殖民地。To find out more about cancer warning s...
Fulminant encephalopathy usually develops within a week.通常爆发性的脑病在一周内发展而成.Early diagnosis of leptospirosis is important because severe lepto spiral infection can have a fulminant course.钩端螺旋体病的早期诊断是非常重要的,因为严重的钩端螺旋体感染可以引起爆...