467
2
27
841
2
27
1242
0
27
825
2
27
710
6
27
632
0
27
970
4
27
625
2
27
821
0
27
2110
0
27
440
0
26
307
2
26
474
2
26
598
0
26
402
4
26
808
0
26
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Keyword(s): 数学 公式