Undercounting will introduce bias and erode the quality of our data infrastructure.

统计不足会引入偏差并削弱我们数据基础设施的质量。

I expect significant undercounting of minority groups who are hard to locate, contact, persuade and interview for the census.

我预计在人口普查中难以找到、联系、说服和面谈的少数民族群体的数量会被严重低估。

Plus, the World Health Organization is accusing China of undercounting its Covid deaths.

此外，世界卫生组织指责中国低估了新冠死亡人数。