夜间活动的动物白天睡觉晚上猎食。
夜间活动的动物在夜间猎食。
这种夜间活动的动物最初生长在一个北欧国家。
This nocturnal creature is originally from a Nordic country.
蝙蝠、猫头鹰和其他夜间活动的动物也是万圣节的普遍标志。
Bats, owls and other nocturnal animals are also popular symbols of Halloween.
谁都不会想到在遥远的北方还会有危险的夜间活动的动物存在。
No one ever thinks that there are dangerous night creatures up north.
老鼠吃东西时唯一的不同就是，在野生环境中老鼠是夜间活动的动物。
The only thing that seemed to differ was when the mice ate. In the wild, mice are nocturnal critters.
老鼠与人类在生理上相似，所以类似的实验结果也可能出现在人类身上。但是老鼠是夜间活动的动物，而人是白天活动的，所以这是一个严重的复杂因素。
Mice and humans are physiologically alike, so a similar effect might be expected for people, but the fact that mice are nocturnal and humans diurnal is a serious complicating factor.
榛睡鼠是一种在夜间活动的胆小动物。
豪特教授解释“因为鲨鱼在水下生存并且很多都喜欢在黄昏和拂晓活动，所以他们生活在相对比较昏暗的环境中。 就如人们在夜晚利用道路反射的光线照明一样，但有一些鲨鱼在一天所有的时间内活动且他们视网膜比一些夜间出没的肉食动物和深水动物拥有更多的视锥细胞和少量的棒形细胞”。
Dr Hart explained that, because sharks live underwater and many are most active at dawn and dusk, they are operating in relatively dim light.
科尔·韦尔指出这项研究是在小白鼠上进行的，而老鼠恰恰是夜间活动动物。
Colwell points out that the study was done in rats, which are nocturnal.
食虫目动物任一种小型的，主要是夜间活动的食虫目哺乳动物，其特点是主要以昆虫为食，包括。
Any of various small, principally nocturnal mammals of the order Insectivora, characteristically feeding chiefly on insects and including the shrews, moles, and hedgehogs.
原产于北美和中美夜间活动的杂食性哺乳动物。
Omnivorous nocturnal mammal native to north and central america.
考拉属喜夜间活动的、于树上的有袋类哺乳动物。
东半球夜间活动的犬科哺乳动物，与狗近缘；与狼形似；有时成群捕食但通常是单个或成对活动。
Old World nocturnal canine mammal closely related to the dog; smaller than a wolf; sometimes hunts in a pack but usually singly or as a member of a pair.
第一天上课时，他给我们讲了一种叫卡蒂万波斯的动物，这种动物夜间活动，在冰河时期，因不适应自然环境而灭绝了。
On the first day of class, he gave us a lecture about an animal called the Cattywampus, an ill-adapted nocturnal animal that was wiped out during the Ice Age, he passed around a skull as he talked.
第一天上课时，他给我们讲了一种叫卡蒂万波斯的动物，这种动物夜间活动，在冰河时期，因不适应自然环境而灭绝了。
On the first day of class, he gave us a lecture about an animal called the Cattywampus, an ill-adapted nocturnal animal that was wiped out during the Ice Age, he passed around a skull as he talked.
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