【明報專訊】The word yen (癮), which comes from Cantonese (廣東話), means an intense craving. British traders began using the word, and it soon entered the English language as meaning to have a strong desire (強烈的慾望). Therefore, when someone has a yen for something, he has a longing for it. If he has a yen to do something, he really wishes to do it. ''I have a yen for roast duck,'' Paula said. ''And I have a yen to increase my savings by buying shares on the stock exchange (證券交易所) !'' Felix smiled.