必不可少

bìbùkěshǎo

HSK 7

必不可少 — bìbùkěshǎo

1. absolutely necessary; indispensable; essential

   水是生命中必不可少的元素。 shuǐ shì shēngmìng zhòng bìbùkěshǎo de yuánsù — Water is an indispensable element in life.