It is difficult to know an exact number because many Vietnamese do not complete census forms in the United States.

确切数字很难获悉，因为很多身居美国的越南人都不填写人口普查表。

The census form asks for information about everyone in the household.

人口普查表要求提供有关家庭中每个人的信息。

Now, some people are lazy, and don't want to send the census form back, so the government finds out who did not return their form and they send a person out to your house.

现在，有些人很懒惰， 不想把人口普查表寄回去，所以政府会查明谁没有寄回他们的表格， 然后派人去你家。

And as Jonathan Bartley, founder of a more liberal religion-watching outfit called Ekklesia, points out, the proportion of Britons (59%) who call themselves Christian on a census form exceeds by a factor of at least ten the number of regular churchgoers.

正如自由宗教组织Ekklesia创始人乔纳森·巴特利指出的那样，在人口普查中声称自己是基督徒的人口（高达总人口的59%）超过了定期去做礼拜的人数的十倍。