安息日犹太教徒和一些基督教派认为星期六－一周的第七天为休息和拜神的日子即安息日 The seventh day of the week, Saturday, observed as the day of rest and worship by the Jews and some Christian sects.
一星期由七天组成。 A week consist of seven days.
一周有七天。 There are seven days in a week.
一星期有几天？一星期有七天。 How many days are there in a week? There are seven days in a week.
