?? 詞語組成解析
common
['kɑm?n]
adj. 普通的;通俗的;[數學]公共的;共有的;
n. [法律]（對土地、水域的）共有權;公共用地;普通;平民;
mackerel
[['m?k?r?l]]
n. 鯖
??? 情景例句
because she's had to go to Chicago on a business trip and can't leave till tonight.
因為她得到芝加哥出差，而且要到今晚才能脫身。
How did you decide that product was safe?
你怎樣決定產品是安全的呢？
and having different effects. One poison acts on the nerves, the other on the blood.
不同毒蛇產生的毒液產生的效果不同，一種毒液作用于神經，另一種毒液作用于血液。