Meaning of biàn lùn:
辩论
debate; argument; CL:場|场[chang3],次[ci4]
Tāmen kāishǐle yī chǎng rèliè de biànlùn.
他们开始了一场热烈的辩论。
They started a heated debate.
Tāmen zhèngzài jìnxíng jīliè de biànlùn.
他们正在进行激烈的辩论。
They are having a heated argument.
Tāmen zhèngzài jīliè de jìnxíng yī chǎng biànlùn.
他们正在激烈地进行一场辩论。
They are engaged in a heated debate.
to argue over
Xuéshēng men zài kètáng shàng jìnxíngle yī chǎng jīliè de biànlùn.
学生们在课堂上进行了一场激烈的辩论。
The students had a heated debate in the classroom.