indispensable
🇺🇸
/ˌɪndɪˈspensəbl/
🇬🇧
/ˌɪndɪˈspensəbl/
so important that you cannot do without it
Her knowledge of local customs made her indispensable to the team during their international project.
她对当地习俗的了解使她在国际项目中成为团队不可或缺的一员。