You can use monumental to emphasize the large size or extent of something.
近义词
huge , massive
双语例句
例：
It had been a monumental blunder to give him the assignment.
分配给他这项任务是一个巨大的错误。
2.?意义深远的 , 不朽的
If you describe a book or musical work as monumental, you are emphasizing that it is very large and impressive, and is likely to be important for a long time.
双语例句
例：
his monumental work on Chinese astronomy.
他关于中国天文学的不朽著作。
3.?宏伟的
A monumental building or sculpture is very large and impressive.