In the new study, they randomly assigned patients to get AIDS medicines when their CD4 count hit 200, the standard procedure, or to get the antiretrovirals earlier, when their CD4 had only dropped to 350.

VOA: standard.2010.07.21

you've got to get rid of the ritual impurity, so there'll have to be some ritual procedure that purges the impurity.

要摆脱不纯洁的仪式，将会有一些手段来净化不纯洁。

耶鲁公开课 - 旧约导论课程节选