Word Detail

他的理论很难懂。

tā de lǐ lùn hěn nán dǒng 。

It's difficult to understand his theory.

理论得联系实际。

lǐ lùn dé lián xì shí jì 。

Theory and practice should go hand in hand.

这个理论很有争议。

zhè ge lǐ lùn hěn yǒu zhēng yì 。

This theory is very controversial.