?? 詞語組成解析
brain
[bren]
n. 腦;智慧;聰明的人;（群體中）最聰明的人;
vt. 打破…的腦袋;打…的頭部;
doctor
['dɑkt?]
n. 醫生，大夫;博士;神學家;醫療設備;
vt.& vi. 醫療，行醫;
vt. 修理，裝配;假造;攙雜;修改，修飾;
doct教+or表名詞，人→教的人→有學問的人→ 博士，醫生
??? 情景例句
I would like to send this by registered mail, please.
我想把這封信掛號寄出。
He that boasts of his own knowledge proclaims ignorance.
夸耀知識實乃無知。
You must be more careful! That car nearly hit you.
你得多加小心！那輛小車差一點碰著你了。