waterline attack

• 吃水线侵蚀

waterline attack的用法和样例：

例句

1. Smaller bow thrusters, installed laterally under the waterline in the nose of the hull, help to push the boat from side to side near docks or obstructions.
   在船首吃水线下方的侧面船壳上，则装有较小型的船首侧推器，当靠近码头或障碍物时能够协助推动船体。