1. Rheophytes have specialized adaptations that allow them to thrive in fast-flowing rivers.
河流植物具有特殊的适应性，使它们能够在水流湍急的河流中生存繁衍。

2. The unique structure of rheophytes helps them anchor themselves securely in the water and avoid being washed away.
河流植物独特的结构帮助它们在水中牢固地根植，避免被冲走。