1) This must be off the charts.
这事肯定不得了。
2) That is some history!
这阅历了不得，
3) I have no recollection of it.
我不记得这件事。
4) That' s a good effort, ie That has been well done.
这事干得不错.
5) You must never do this.
这件事你做不得。
6) I'm not in a position to take care of this business.
这事我管不了。
补充资料：不一定
1.谓不能确定。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条