thickenKK [ˋθɪkən] /ˈθɪkən/動詞1使變濃稠、變濃稠、勾芡Add a little cornstarch to thicken the sauce before serving.上菜前加一點玉米粉把醬汁勾濃一些。2變厚、加厚The ice on the lake thickens quickly during a cold spell.寒流來的時候,湖面的冰層會迅速變厚。3變濃密、變濃The fog thickened until we could barely see the road.霧愈來愈濃,我們幾乎看不見路面。4變得複雜、趨於複雜多用於 the plot thickensWhen the second witness changed her story, the plot thickened.第二位證人改了說法後,情況變得更複雜了。