狗是群居动物,如果没有适当的训练,它们的行为就会像野兽一样。
Dogs are social animals and without proper training, they will behave like wild animals.
在野外,它们是相互合作的群居动物。只有当每只猴子感到自己没有受到欺骗时,这种合作才可能稳定。
In the wild, they are a co-operative, group-living species, Such co-operation is likely to be stable only when each animal feels it is not being cheated.
当然,恐龙一度是活跃的。在长达1.6亿年的时间里,它们成功地与温血的哺乳动物进行竞争,这种群居动物在一定的条件下主宰着整个地球。
Certainly, dinosaurs were active and, in some cases, social animals that successfully competed with warm - blooded mammals during their 1 60-million-year-long reign on the earth.
当然,恐龙一度是活跃的。在长达1.6亿年的时间里,它们成功地与温血的哺乳动物进行竞争,这种群居动物在一定的条件下主宰着整个地球。
Certainly, dinosaurs were active and, in some cases, social animals that successfully competed with warm - blooded mammals during their 1 60-million-year-long reign on the earth.
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