4 sentences

1. 我们互相不可缺少。

   wǒ​men hù​xiāng bù​kě​quē​shǎo.

   We are indispensable to one another.

   Source: CCMatrix

2. 音乐对我来说，就如同氧气一样，不可缺少。

   yīn​yuè duì​wǒ​lái​shuō, jiù rú​tóng yǎng​qì yī​yàng, bù​kě​quē​shǎo.

   For me, music is as essential as oxygen.

   Source: CCMatrix

3. 新鲜空气和干净的食物两者对我们是不可缺少的。

   xīn​xian kōng​qì hé gān​jìng de shí​wù liǎng​zhě duì wǒ​men shì bù​kě​quē​shǎo de.

   Both fresh air and clean food are indispensable to us.

   Source: UM-Corpus: News

4. 随着冬季的到来，电暖器已成为供暖不可缺少的一种方式。

   suí​zhe dōng​jì de dào​lái, diàn​nuǎn​qì yǐ chéng​wéi gōng​nuǎn bù​kě​quē​shǎo de yī​zhǒng fāng​shì.

   With the arrival of winter, electric heaters have become an indispensable way of heating.

   Source: CCMatrix