Headgroups
(headgroup 的复数) [医]首基
🗣️ 情景例句
He wrote some nice articles on Mom
他写了一些介绍妈妈的好文章
Am I your teacher?
我是你们的教员吗？
has spent his lifetime studying active volcanoes and deep caves in all parts of the world.
花了毕生的精力来研究世界各地的活火山和探洞。