Unverified72% confidenceTradeoffTime unknown
双头笔看似一支顶两支性价比高，但细头端墨水消耗快且更易干涸，若主要用粗头划重点，单头凿尖笔耐用度和出墨稳定性更好
1
Sources
72%
Confidence
Long-term
Relevance
-
First Seen
Sources
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