In health care, this is called screening.

在医疗保健中， 这称为筛查。

This happens through a process called screening, and when we do it regularly, we can prevent many cases of colon cancer.

这是通过称为筛检的过程，而如果定期进行，我们可以避免许多大肠癌的案例发生。

Title 8 means that if a migrant passes what's called a credible fear screening by the asylum officer, then their case is referred to immigration court where the migrant can apply for asylum as a defense against being deported.

“第8条款”意味着，如果某位移民通过了庇护官员所谓的可信恐惧筛查，那么他们的案件就会被移交给移民法庭，在那里移民可以申请庇护，作为对被驱逐的辩护。