Required each day: 25 minutes of recess, 20 minutes of movement, 25 minutes in play centers.

每天的要求是：25分钟休息时间、20分钟运动时间以及25分钟玩耍时间。

youdao

A key role that EA could play in a Web 2.0 CMS centers on content protection.

ea在web 2.0 CMS中扮演的关键角色集中于内容保护。

youdao

In the ear, calcium may play a role in causing damage to hair cells (specialized cells that sense sound vibrations) and the nerve cells that connect the hair cells to the hearing centers of the brain.

在我们的耳朵中，钙离子在导致毛细胞(能够感觉声音振动的特殊细胞)和神经细胞(连接毛细胞和大脑的听觉中枢)的损伤中扮演了重要的作用。

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It is setting up 13 centers they call Child-Friendly Spaces, where children can play with other children, and get counseling.

VOA: standard.2009.10.06

Shopping centers, which play host to day-to-day necessities--drugstores, hair salons, laundries--are down 0.5%. (The big malls, owned by powerful players like real estate investment trusts, are finding meager advances in same-store sales at their department stores and boutiques.) Warehouses, their growth pace off only half a point to 4%, are still much in demand.

FORBES: Going Commercial

Public places where infants gather, including fast-food restaurant play-corners, wading pools and enrichment program centers, were out of bounds.

CNN: In the Grip of a Virus

On this night, when one of the Knicks' centers (Phil Jordon) didn't play because of an illness, and the other center (Darrall Imhoff) fouled out after playing just 20 minutes, Chamberlain had five inches and 50 pounds on the next-biggest Knick for 28 minutes.

WSJ: The Night Wilt Chamberlain Made History