フリーク波は

noun

freak wave; rogue wave

A single, unexpectedly large ocean wave that appears even in relatively calm seas. Used in oceanography and maritime contexts.

• フリーク波はは突とつ然ぜん発はっ生せいし、船せん舶ぱくに大おおきな被ひ害がいを与あたえることがある。

  Freak waves can appear suddenly and cause serious damage to ships.