?? 詞語組成解析
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
of
[?v]
prep. 關于;屬于…的;由…制成;
aux. 助動詞 [非標準用語、方言] =have [主用于虛擬語氣];
letters
[[let?z]]
n. 字母；書信；讀者投書欄（letter的復數）
??? 情景例句
Try putting him across your lap on his stomach.
試試讓他趴著睡在你大腿上。
How would I know?
我怎么知道？
She was offered a job as a translator, but she turned it down.
有人請她去作翻譯，她拒絕了。