台风是发生在热带洋面上的一种强烈的暖性气旋性风暴，是威胁船舶安全航行的最严重的灾害性天气系统之一。
Typhoon, a kind of strong warm cyclonic storms occurring over tropical oceans, is one of the most seriously disastrous weather systems.
每年洪水席卷大部分国土，热带气旋带来灾难性风暴。
Every year floods sweep across much of the land. Catastrophic tropical cyclones bring storm surges as well as murderous winds.
从十二月到四月气旋灾害频发，上周末一个致命性的五级风暴“帕姆”登陆该岛屿。
They can strike anywhere from December to April, a devastating category five storm named Cyclone Pam came ashore over the weekend.
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