glacial

Glacial retreat over the past century has been dramatic in alpine regions worldwide.过去一个世纪中，全球高山地区的冰川退缩现象非常戏剧化。

The glacial pace of curriculum reform frustrated many educators and students alike.课程改革的冰川般缓慢的步伐让许多教育工作者和学生感到沮丧。