English translation of '马后炮'

名

1. ⇒ 他总是爱放马后炮。 (Tā zǒngshì ài fàng mǎhòupào.) He's always too slow to act.
   ⇒ 事后才提建议,这不是马后炮嘛！ (Shì hòu cái tí jiànyì, zhè bùshì mǎhòupào ma!) Isn't it a bit late to be making suggestions after the event?