As a professional animal trainer, I was disturbed when my own dog developed a bad habit. Every time I hung my wash out on the clothesline, she would yank it down. Drastic action was called for.

I put a white kitchen towel on the line and waited. Each time she pulled it off, I scolded her. After two weeks the towel was untouched. Then I hung out a large wash and left to do some errands. When I came home, my clean clothes were scattered all over the yard. On the line was the white kitchen towel.

作为一名专业的驯兽师，我对自己的狗养成的一个坏习惯感到很苦恼。每当我把洗好的衣服搭在晾衣绳上时，它总会猛地把衣物全扯下来。对此，我必须要采取严厉的措施。

我在绳上搭了一条白色的厨房毛巾，每当它把毛巾扯下来时，我就会训斥它一顿。两个星期后，它再也不碰毛巾了。于是，我把许多洗干净的衣服搭在晾衣绳上后，就出去办事了。等我回到家时，洗好的衣服分散在院子的各个角落，只有那条白毛巾依然搭在绳子上。