任何管理上的不足和疏忽，都会对活动造成不可估计的后果。

Any deficiency or cursoriness of the management will lead to grave consequences.

youdao

—这就证明这样一条新真理：一切重大事件必有不可估计的后果。

All of which goes to prove the novel truth, that great events have incalculable consequences.

youdao

这两个地方都迸发着能量，但是当然，中国有着不可估计的生产力。

Both of these places are booming with energy, but of course, China is simply a workforce beyond comprehension.

youdao