Octadiene
辛二烯
??? 情景例句
As a matter of fact,
事實(shí)上，
There's many a good tune played on an old fiddle.
老當(dāng)益壯。
Shortly after this the famous H. M. S. Challenger expedition established the study of the sea-floor as a subject worthy of the most qualified physicists and geologists.
此后不久，英國著名的“挑戰(zhàn)者”號(hào)艦艇對(duì)海底的那次考察，把對(duì)海床的研究確立為一個(gè)值得一流物理學(xué)家和地質(zhì)學(xué)家從事的研究課題。