Unverified60% confidenceFactTime unknown
无球设计意味着内部没有可移动的豌豆球,浸水、结冰或泥沙堵塞后仍能正常发声,是户外/水上场景相较传统有球哨的核心优势。
2
Sources
60%
Confidence
Long-term
Relevance
-
First Seen
Sources
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