Petrosilane
巖芹烷, 二十(碳)烷
??? 情景例句
Any stocks or bonds?
有股票或債券嗎？
Wickedness does not go altogether unrequited.
惡有惡報。
the varieties are infinite; but two classes may be roughly seen.
鳥的飛行方式千差萬別，但大體上可分為兩類。