必需 bì xū to needto requireessentialindispensable Example sentences 音乐是他生活的必需品。 yīnyuè shì tā shēnghuó de bìxūpǐn. Music is a necessity in his life 我们必需改变环境的问题，才可以有更好的生活。 wǒmen bìxū gǎibiàn huánjìng de wèntí, cái kěyǐ yǒu gènghǎo de shēnghuó. We must change the environmental problems to have a better life