Back of the breakwater the dredger was working.

在防后面挖泥船正在工作。

They riprapped the breakwater with stone.

他们以乱石基巩固防。

The project department monitors and controls the whole process of breakwater enrockment costruction by field observing instruments buried in sand soft nappe.

过埋设在砂肋软体排上的原形观器,对防抛石施工过进行了全。