“drainage channel”簡單造句，drainage channel造句子

1、Design work for another 24 kilometres of new river channels are under way, including the upper reaches of Kam Tin river, Ngau Tam Mei drainage channel and San Tin drainage channel.

3、The water level of the Tangjiashan quake lake continued to rise - though at a slower speed than a day ago - despite the smooth operation of a man-made drainage channel, CCTV reported Sunday.

2、The main drainage channel for yellow sand to the sea port, and some flooding from the Sheyang River into the sea.