大拇指的法规是这么说地

if you can afford a new (or expensive) car, trade in the old junk.

if you can't afford a new one, repair the current one.

所有跟帖： 

• 这跟大拇指有什么关系？ -搬家了- ♂ (0 bytes) () 03/06/2010 postreply 00:14:09

• 他是说 as a rule of thumb -cire622- ♂ (0 bytes) () 03/06/2010 postreply 05:39:31