operating dam（挡潮闸）是什么意思？音标发音+图解场景

挡潮闸 /ˈwɒntˈəʊd ˈhuːf/ n

English: operating dam · 挡潮闸

释义：Structure with gates that control the basin level in relation to the level of the sea.

这个词出现在以下图解场景（1）