自然 | a tranquil lake surrounded by smooth, flat rocks, reflecting calm waters, and dotted with a few solitary trees
交通 | a sleek hovercraft glides smoothly over a calm, glassy surface, leaving ripples in its wake, surrounded by mist
动物 | 一只鸭子在宁静的湖面上平稳滑行,波纹在它身后扩散