rapid
例
The rapid river flowed swiftly downstream.
速い川が速く下流に流れた。
She made rapid progress in learning the new language.
彼女は新しい言語の学習で急速な進歩を遂げた。
02
速い, 迅速な
happening in a short time; moving or acting fast
Rapid
01
急流
a fast and turbulent part of a river with swift currents and obstacles like rocks
例
They navigated the river 's rapids with skill and caution.
彼らは川の急流を巧みに慎重に進んだ。
The kayakers enjoyed the challenge of paddling through the rapids.
カヤックを楽しむ人々は、急流を漕ぎ抜ける挑戦を楽しんだ。
