n.防波堤
v.给（海滩等）筑防波堤
=groin.
The contribution of groyne height reduction to counteracting unwanted erosion is then considered a favourable incidental circumstance. 丁坝降低对减少一些对主槽不利的侵蚀是一项比较可取的措施。
LI Hong.A study on hydraulic properties of groyne[D].Chengdu:State Key Laboratory of Hydraulics on High Speed Flows,Sichuan University,2003. [3]李洪.
[Hydraulics] a spur dike; a groyne 丁坝
Construction of in single-row groyne 单排桩式丁坝的优点及施工
Construction of sheet pile for pile groyne in Qiantang River 钱塘江桩式丁坝板桩的施工工艺
