extract from的用法和樣例：
例句
- I would like to quote two extracts from the book.
我很想引用這本書的兩段文字。 - An extract from the music for another part printed, usually in smaller notes, within a performer's part as a signal to enter after a long rest.
提示小節在樂譜中為另一聲部作準備的選段，通常用較小的字體印刷，在演奏部分之內，作為在長時間休息后另一聲部進入的信號
