我们有责任维护公共环境的整洁。

Wǒmen yǒu zérèn wéihù gōnggòng huánjìng de zhěngjié.

We have the responsibility to maintain the cleanliness of the public environment.

他们成立了一个组织，专门维护当地居民的合法权利。

Tāmen chénglì le yí gè zǔzhī, zhuānmén wéihù dāngdì jūmín de héfǎ quánlì.

They set up an organization dedicated to safeguarding the legal rights of local residents.

定期维护电脑系统可以减少出故障的机会。

Dìngqī wéihù diànnǎo xìtǒng kěyǐ jiǎnshǎo chū gùzhàng de jīhuì.

Regularly maintaining the computer system can reduce the chance of failures.