tiếng ồn 
noise like: Rauschen → →
das Rauschen ☊ 
tiếng ồn ☊ 
☊ Rauschen ☊ 杂音 ☊ záyīn to make a noise/mess/fuss ☊ make ☊
People alter their voices in relationship to background noise. ☊ relationship ☊
the sound of rushing water ☊ rush ☊
They listened to the rush of the sea below. ☊ rush ☊
Noise from the factory has reached an unacceptable level. ☊ unacceptable ☊
the gentle sound of waves lapping ☊ wave ☊