mind-boggling 极其惊人的
boggle at 对...感到吃惊
1. The sheer scale of the project is boggling.
这个项目的规模之大令人难以置信。
2. It is boggling to think how much things have changed.
想到事物发生了如此大的变化，真是令人难以置信。
3. The amount of data being processed is boggling.
正在处理的数据量大得惊人。
A: The cost of this new technology is simply boggling.
A：这项新技术的成本简直高得惊人。
B: I agree, it's boggling how much money they spent.
B：我同意，他们花掉这么多钱真是令人难以置信。
1) 极其惊人的
2) 令人困惑的
3) 难以理解的
1. 使人惊愕的；难以置信的
e.g.
The sheer number of applicants was boggling.
申请者的数量之多令人瞠目结舌。
adjective
1. extremely surprising, shocking, or difficult to imagine or understand
Synonym: astonishing, staggering