take an average

例句：

1. 1. Please take this umbrella with you when you leave the house.
   当你离开家时，请带上这把伞。
2. 2. The teacher took the class to a museum for an educational visit.
   老师带全班去博物馆进行一次教育性的参观。
3. 3. She took the opportunity to ask him about his work.
   她抓住这个机会问他关于他工作的事情。