Obtuse triangle
钝角三角形
🧩 词语组成解析
🗣️ 情景例句
Politics are a sensitive subject of conversation.
政治是交谈的敏感话题。
He sketched his own part in the affair.
他概述了自己在此事中的作用。
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。