名词
中文翻译：半蝴蝶过境
同义词：
['half butterfly pass', 'semi-pass', 'half-pass']
例句：
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1. The butterfly's wings are a symbol of rebirth and transformation.
蝴蝶的翅膀象征着重生和变化。
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2. During the summer months, many birds use this passage to travel between their breeding grounds and wintering areas.
在夏季，许多鸟类利用这个通道从繁殖地到越冬地之间迁徙。
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3.The scientist observed that the butterflies were using this passage as a natural shortcut during their migration.
科学家观察到，蝴蝶们利用这个通道作为它们迁徙过程中的自然捷径。