圓形物的用法和樣例：
例句
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圓形物體圓形物體；圓圈或環形軌道
Something of circular form; a circle or an orbit. -
「圓」這個字如果單就其本身而言，而不與任何圓形物體相聯想時，它是一個抽象名字。
Roundness is an abstract term, so long as one considers it by itself and separates if from any subject that is round.
