Pentanitrophenol
五硝基苯酚
??? 情景例句
He is working on a book about the Vietnam War.
他正在寫一本關于越戰的書。
A cheerful wife is the joy of life.
快樂的妻子是生活的樂事。
(Bruce rings up his father on the telephone.)
（布魯斯給他父親打電話。）