名 circumference，periphery，week，circuit；动 make a circuit，move in a circular course，help sb. out；形 all，whole，thoughtful，attentive ；

[例句] 他们的水在几周以前就毫无理由地被切断了。 Their water was turned off weeks ago without explanation.

[例句] 志愿者记录下他们一周所吃的所有食物。 The volunteers kept a record of everything they ate for a week.