For instance, US standards for the management of laboratory animals require research establishments to provide toys for chimpanzees and monkeys, because these animals, which like humans are primates, have a strong need for play.
在美國實驗動物管理標準中，就要求實驗單位應考慮為猩猩、猴子準備玩具，因為與人同屬靈長類的它們有強烈的遊戲需求。