3 sentences

1. 他们缺少必备的技能。

   tā​men quē​shǎo bì​bèi de jì​néng.

   They lack the necessary skills.

   Source: CCMatrix

2. 在雨季雨衣是必备之物。

   zài yǔ​jì yǔ​yī shì bì​bèi zhī wù.

   A raincoat is a must in the rainy season.

   Source: UM-Corpus: Spoken

3. 维多利亚海绵蛋糕，就是英国下午茶点的经典必备。

   wéi​duō​lì​yà hǎi​mián​dàn​gāo, jiù​shì yīng​guó xià​wǔ​chá diǎn de jīng​diǎn bì​bèi.

   Victoria sponge cake is a classic must for British afternoon tea.

   Source: CCMatrix