The route that the boatmen choose varies according to the water level.船夫选择的路线会随水位的变化而有所不同。The boatmen want to hear everything on the air while on the waves.船工们出海时希望通过广播听到各种各样的消息。The boatmen accompany the stroke of their oars with the sound of their voices.船夫们一边划桨一边喊号子。