Passengers have to go to the assembly station when the emergency alarm is sounded, which consists of seven short blasts and one blast that lasts several seconds.
Aembraced
Binherited
Cprolonged正確答案
Dsmashed
答案與詳解
prolonged 意為「延長的、拖長的」,搭配 lasts several seconds(持續數秒)最貼切,指長鳴聲。
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