Vinylmethylketone
丁烯酮
🗣️ 情景例句
Don't rush, take your time.
别急急忙忙的，慢慢来。
Sure. Have a good day.
应该的。祝你度过愉快的一天。
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，英国著名的“挑战者”号舰艇对海底的那次考察，把对海床的研究确立为一个值得一流物理学家和地质学家从事的研究课题。