undercount
🇺🇸
/ˌʌndərˈkaʊnt/
🇬🇧
/ˌʌndəˈkaʊnt/
To not count as many people or things as there actually are in a group.
The survey might undercount the number of people who prefer to stay at home on weekends.
调查可能会低估周末喜欢呆在家里的人数。