形容词
中文翻译：没有边界的
同义词：
['boundless', 'boundary-free', 'unbounded']
例句：
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1. The ocean is an unbounded expanse of water.
海洋是一片无边无际的水域。
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2. The forest was unbounded, stretching as far as the eye could see.
森林无边无际，直到眼睛所及之处。
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3. The artist's work is bounded only by the canvas.
艺术家的作品被画布所限制。