模块 (mó kuài) means “module” | MotiTan Chinese Dictionary

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新课程把内容按课程模块组织，便于复习。xīn kè chéng bǎ nèi róng àn kè chéng mó kuài zǔ zhī biàn yú fù xí

The new course organizes the content by course module, making it easier to review.

A self-contained functional piece that fits into a larger system and can be swapped or used again.

单元dān yuán: A single organized unit in a course, building, or product.
部分bù fèn: A distinct section that forms part of a larger whole.

系统中可以独立设计、替换或复用的功能单元。xì tǒng zhōng ké yǐ dú lì shè jì tì huàn huò fù yòng de gōng néng dān yuán

The modern compound 模块 (mókuài, "module") joins 模 (mó, "form or model") and 块 (kuài, "piece"), highlighting a piece made to have a defined role.

In Chinese technical speech, 模块 (mókuài, "module") signals a planned unit with one clear function, so it is more precise than a general reference to any part.