hydraulic limestone
A poet officially appointed by a government, often expected to compose poems for state occasions and other government events.
A surname from German.
Not dapper.
A limestone which contains some clay, and which yields a quicklime that will set, or form a firm, strong mass, underwater.
技術者たちは河岸の基礎に、水中でも硬化する消石灰を生じる粘土を含む石灰石を選んだ。
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