把首字母换成字母f，组成新单词fog，意思是：n.雾;迷惘;困惑;v.(使)雾气笼罩;使迷惘;使困惑;使混淆不清。
例句：1.Fog and low cloud cover are expected this afternoon.
预计今天下午有雾和低空云层。
2.Three people died in a multiple pile-up in freezing fog.
有三人死于冻雾引起的连环车祸中。
3.He went through the day with his mind in a fog.
整整一天，他的头脑都是昏昏沉沉的。
