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billow; surge; large wave
突然、巨大な大波が岸を襲った。
Suddenly, a huge wave struck the shore.
台風の影響で港に大波が押し寄せた。
Due to the typhoon, big waves surged into the harbor.
船は激しい大波に揉まれて大きく揺れていた。
The ship was tossed by fierce waves and rolled heavily.