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 attend to be given lots of food and left to nibble at leisure.
请你在闲暇时候读一读它。
回到卡昂后，出于良心考虑，我在闲暇时验证了结果。
On my return to Caen, for conscience's sake I verified the result at my leisure.
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