421
0
3
158
2
2
86
0
2
220
2
2
198
0
2
121
0
2
194
0
2
111
0
2
129
0
2
103
0
2
162
0
2
150
0
2
95
0
2
172
3
2
150
0
1
169
0
1
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Keyword(s): 化学反応式