A structure extending into the water, used as a pier, or wall, to protect a harbor or to direct currents.

防波堤；碎波堤；码头。

A projecting part of a building.

房屋的凸出部。

To jet out or project.

突出；凸出。

Made of jet.

煤玉制的。

Like jet in color; of a deep glossy black.

煤玉色的；深黑的。