The polar bears at the zoo live in a controlled environment.动物园的北极熊生活在人工控制的环境中。The art is housed in a purpose-built structure that provides a controlled environment.这件艺术品被放在一个特制的建筑物里，里面的环境是可以调控的。These animals were raised in a controlled environment.这些动物被养在一个受控制的环境中。