form
12 words
1
conform
2
formal
3
format
4
formation
5
former
6
formula
7
formulate
8
inform
9
perform
10
performance
11
reform
12
transform
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form
词根组
12 词汇
已掌握 0
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conform
1
formal
2
format
3
formation
4
former
5
formula
6
formulate
7
inform
8
perform
9
performance
10
reform
11
transform