理论 (lǐlùn)

理论 means a theory or theoretical framework, referring to a set of ideas that explains how something works.

Meanings

[noun] theory; a systematic set of ideas that explains phenomena or guides practice

Example Sentences

这个理论已经被很多实验证明了。 Zhège lǐlùn yǐjīng bèi hěn duō shíyàn zhèngmíng le. This theory has been proven by many experiments.

理论和实践同样重要。 Lǐlùn hé shíjiàn tóngyàng zhòngyào. Theory and practice are equally important.

他在理论研究方面有很深的造诣。 Tā zài lǐlùn yánjiū fāngmiàn yǒu hěn shēn de zàoyì. He has deep attainment in theoretical research.

从理论上说，这个计划是可行的。 Cóng lǐlùn shàng shuō, zhège jìhuà shì kěxíng de. In theory, this plan is feasible.

Collocations

Collocation	Meaning
理论研究	theoretical research
理论基础	theoretical foundation
从理论上	in theory; theoretically
理论联系实际	linking theory with practice

Usage Notes

理论 is contrasted with 实践 (practice) in Chinese discourse, and the phrase 理论联系实际 (linking theory to practice) is a very common expression. 从理论上说 or 理论上 means "theoretically" or "in theory" and is useful for expressing something that works conceptually but may not in reality.

Memory Hook

理 means "to reason/principles" and 论 means "to discuss/discourse": a 理论 is a discourse built on reasoned principles, a theory.