Octomethylene
環辛烷
??? 情景例句
I can't put my finger on what exactly makes a written piece a classic.
我不知道什么使一篇著作成為經典。
He who would search for pearls must dive below(or deep).
欲尋珍珠，須潛水下。
Not realizing who she was, the assistant was eager to serve her this time.
那個售貨員沒有認出她是誰，這一回接待她的態度非常殷勤。