为小事进行无谓的争吵只会损害关系。

Engaging in ___pointless arguments over small matters only strains relationships.

没有明确的目标，这个项目感觉像是徒劳无功的操练。

Without clear goals, this project feels like a ___pointless exercise.

有些人觉得仅在网上交流是一种无意义且孤独的体验。

Some find communicating solely online to be a ___pointless and isolating experience.