(优胜者),clever dog(聪明人)等都可以指人,如果某人买彩票得了头奖,你说He is a lucky dog,一点也没有贬义或嫉妒的含义,等于说“他真走运”或“他真是福星高照”;Every dog has its day意为“凡人自有出头日”,help a lame dog over a stile是指“济人之急”,like a d...