Kerylbenzene
煤油烷基苯
🗣️ 情景例句
Are there any sports clubs on campus?
校园中有什么体育活动俱乐部吗？
Have you milked the cows?
你已经挤过奶了吗？
Such undertakings require the precise planning and foresight of military operations.
这种活动需要有军事行动般的周密布署和预见能力。