An old dog cannot learn new tricks.

同义词释义

1)An old dog cannot learn new tricks.,老狗学不出新把戏。2)An old dog cannot learn new tricks .,老犬难学新把戏。3)a trick dog.,会耍把戏的狗4)Huang Lao Neodoxy,黄老新学5)Turn the bully out of the bar; turned the dog loose.,把这个恶棍赶出酒吧;把狗放开6)never late to learn,老不废学