这个看上去很忠实的保姆实际上是一个惯愉。凯文一家真是引狼入室了。

[误] This seemingly honest baby-sitter is actually a habitual thief. The Kevin\'s do lead the wolf into thehouse.

[正] This seemingly honest baby-sitter is actually a habitual thief. The Kevin\'s do put the cat among thepigeons.

注：put the cat among the pigeons 的字面意思是“将猫放进鸽子笼”。可以想象，那样的话笼子里一定不得安宁。它与“引狼入室”有异曲同工之妙，而且更地道，更易于西方人理解。