Unverified75% confidenceTradeoffTime unknown
声音越清脆响亮往往内部空腔越大、体积越大,与'轻便易抓握'存在矛盾;小月龄优先轻量哑铃/沙锤类柔和音,月龄大再换响亮款
1
Sources
75%
Confidence
Long-term
Relevance
-
First Seen
Sources
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