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自然界的物体,多数呈曲线状。崇山峻岭,是屹立着的曲线;江河溪流,是流动着的曲线;一弯新月,一道彩虹,飞禽展翅,走兽奔夺,是变幻着的曲线;花卉则以曲线展示媚态。
The objects in nature are mostly curvilinear. The mountains and valleys are the curves that stand; the rivers and streams are the flowing curves; the crescent moon, a rainbow, the flying wings of birds and the beast run by the beasts are the changing curves; and the flowers show a curved line.