The tiger is a solitary animal;
老虎是一只孤独的动物；
Of course, the reverse is also true. If an animal is in overcrowded conditions or a truly solitary animal is kept in a group, they may be stressed and suffer as a result.
当然，如果动物生活在过于拥挤的群体或喜欢独居的动物被安置在群体里，它们所承受的压力和痛苦是很真实和鲜明的。
A solitary and nocturnal animal, it is not often seen in the wild.
这是一种夜行独居动物，在野外甚少看到。
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