You go to the stereo store, you see two sets of speakers -- these big, boxy, monoliths, and these little, sleek speakers, and you play them, and you go, you know, I do hear a difference: the big ones sound a little better.
你去到一个音响商店， 你看到了两款扬声器—— 一款是又大又方像石头的， 一款是小巧玲珑外表光滑的， 然后你都试了一下， 觉得确实听到了它们的区别： 大的那个听起来好一些。