他们在意识形态上存在对立。

Tāmen zài yìshí xíngtài shàng cúnzài duìlì.

They are in opposition in terms of ideology.

这两个观点存在对立。

Zhè liǎng ge guāndiǎn cúnzài duìlì.

These two opinions are in opposition.

个人利益和集体利益有时会对立。

Gèrén lìyì hé jítǐ lìyì yǒushí huì duìlì.

Individual interests and collective interests can sometimes be in conflict.