Cornocentin
马来酸麦角新碱
🗣️ 情景例句
What about Michelle's school?
那Michelle的学校怎么办？
It was a six-hour flight.
它要6小时的飞行。
Late in the afternoon, the boys put up their tent in the middle of a field.
傍晚时分，孩子们在田野中央搭起了帐篷。