菲格及其同事分别在装有木屑的普通盒子和放有盒子、飞轮和玩具等物品的“高级”笼子中培育两组幼鼠。在后一个环境中，研究人员还不停地变换物品的摆放。
Feig and colleagues raised mice, some in plain cases with wood chips and others in "enriched" cages with boxes, a running wheel, toys, and constant rearrangements of nesting material.
这个机器老鼠和普通老鼠一样大，但看起来就像一个简易的带轮子的塑料盒子。
The robot was the same size as a regular rat but resembled a simple plastic box on wheels.
第二个塔楼，其实看起来更像是一个普通的玻璃盒子，它的背立面是雅致的装饰板条，由黑基木板条和植物组成。
The second tower, meanwhile, is a more generic glass box, whose rear facade is tastefully embellished with blackbutt battens and planting.
第二个塔楼，其实看起来更像是一个普通的玻璃盒子，它的背立面是雅致的装饰板条，由黑基木板条和植物组成。
The second tower, meanwhile, is a more generic glass box, whose rear facade is tastefully embellished with blackbutt battens and planting.
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