水道

shuǐ dào wān qū chéng dù

水道弯曲程度

the curving degree of watercourse

shuǐ dào guǎn jiàn

水道管件

pipes pieces of the watercourse

huáng jīn shuǐ dào

黄金水道

golden waterway

xiá zhǎi de shuǐ dào

狭窄的水道

narrow waterway