Unverified78% confidenceTradeoffTime unknown
形态上'水滴/单球'比'双球串联'更适合初学者：单球插入浅、异物感低、易取出；双球需要更强的肌力协调才能保持位置，进阶后再考虑
1
Sources
78%
Confidence
Long-term
Relevance
-
First Seen
Sources
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