１：１

1 mrn0 Jul 25, 2025, 9:07:31 PM Study time: 36 seconds
Today's learning: 1
New: 2
Consecutive study days: 1
Difficult review: 1
数1 １：１

2 mrn0 Jul 19, 2025, 11:17:13 PM Study time: 42 seconds
Today's learning: 1
New: 3
Consecutive study days: 3
Difficult review: 1
数1 １：１ 数2

3 mrn0 Jul 6, 2025, 5:27:32 AM Study time: 1 minute(s)
Today's learning: 1
New: 2
Consecutive study days: 3
Difficult review: 1
理論化学7 理論化学 １：１