Due to its structure, internal condensation from breath easily builds up and, if performed continually, water drops on the shita will distort the pitch and eventually lead to loss of sound.
構造上、呼気によって内部が結露しやすく、そのまま演奏し続けると簧に水滴が付いて音高が狂い、やがて音そのものが出なくなる。