返回所在国的签证必须在指定停留期后至少三个月内有效。

The visa for the return country must be valid for at least three months beyond the period of intended stay.

youdao

两次入境签证有效期一般为三至六个月，每次停留期为30天。

A double entry visa is valid for 3 to 6 months with duration of each stay 30 days.

youdao

停留期的计算，是以天为单位的，一般情况是从入境第二天开始。

Duration of stay after entry calculates by days. It usually starts to count from the second day of entry.

youdao

So, according to Freud, there are people in this room who are what they are because they got stuck in the oral stage or the anal stage.

所以根据弗洛伊德的理论，在座各位之所以展示出不同的人格,是因为你们停留在了口腔期或肛门期。

耶鲁公开课 - 心理学导论课程节选