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C115 · 普通句（141 课）
The essay is easy to write once the research is completed.
Course 115
(普)The essay is easy to write once the research is completed.
1 句 · 父母与孩子分角色配音
旁白 neutral
The essay is easy to write once the research is completed
一旦研究完成，这篇论文就很容易写了
