This is strange because the sorts of lab animals the researchers looked attend to be given lots of food and left to nibble at leisure.
这很奇怪，因为研究人员观察的各种实验室动物往往被给予大量食物，且让它们在闲暇时一点一点蚕食。
This is strange because the sorts of lab animals the researchers looked at tend to be given lots of food and left to nibble at leisure.
这很奇怪，因为研究人员观察的各种实验室动物往往被给予大量食物，且让它们在闲暇时一点一点蚕食。
This is strange because the sorts of lab animals the researchers looked at tend to be given lots of food and left to nibble at leisure.
这很奇怪，因为研究人员观察的各种实验室动物往往被给予大量食物，且让它们在闲暇时一点一点蚕食。
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