Post : user(0b22ccea50cc)

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user(0b22ccea50cc) Aug 31, 2025, 5:31:17 PM Study time: 35 seconds
Consecutive study days: 1
Difficult review: 1

user(0b22ccea50cc) Aug 31, 2025, 5:31:17 PM Study time: 2 minute(s)
Today's learning: 21
Consecutive study days: 1
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化学式

user(0b22ccea50cc) Aug 31, 2025, 5:36:35 PM Study time: 5 minute(s)
Today's learning: 34
Consecutive study days: 1
Difficult review: 1
All tasks completed!
化学式 元素記号　金属 元素記号　非金属