1. brevity 短暫；簡潔
He is famous for the brevity of his speeches. 他以言詞簡潔著稱.
2. drowse vi. 打瞌睡
He drowsed in the sun. 他在陽光下打瞌睡。
3. capricious adj. 無定見的，變幻莫測的
We can't go camping while the weather is so capricious. 天氣如此變化莫測，我們無法去野營了。
4. catalyst n. 促進因素
The action of a catalyst, especially an increase in the rate of a chemical reaction. 催化作用催化劑的作用，尤指加快化學反應速度的
5. catastrophe n. 災禍，災難
The flood was a major catastrophe.
洪水是一場大災難。
