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C107 · 普通句（141 课）
She has made a significant contribution to the field of chem
Course 107
(普)She has made a significant contribution to the field of chemistry.
1 句 · 父母与孩子分角色配音
旁白 neutral
She has made a significant contribution to the field of chemistry
她在化学领域做出了重大贡献
