gōngchéngshī / zài / qúdào / zhōng / shèzhì / diē shuǐ / yǐ / jiǎnhuǎn / shuǐliú / sùdù / bìng / bǎohù / héchuáng

工程师在渠道中设置跌水，以减缓水流速度并保护河床。

The engineer installed a drop structure in the channel to slow the water flow and protect the riverbed.