To his surprise, he saw 1,000 happy dogs in the mirrors.
他惊讶地在镜子里看到了1000只快乐的狗。
No matter where dogs live, they are always lovely and happy dogs.
无论哪里的狗狗,都是让人喜欢的狗狗。
Dogs may indeed be able to distinguish between happy and angry human faces, according to a new study.
根据一项新的研究,狗也许确实能够分辨人类高兴和生气的脸。
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