The Mongols were an unbelievably effective military force.

蒙古军是一支难以置信的高效率军队。

Many were untrained, but Spartacus's clever tactics transformed them into an effective guerrilla force.

大多数人都未接受过训练，但是斯巴达克斯机智的战术将他们变成一支高效的游击力量。

Western intelligence estimates reckon such groups now represent as much as 80% of the effective rebel fighting force.

西方情报机构评估认为这样的团体现在占到了反对派有效战斗力的80%。

And the best hope for Sierra Leone in the long term is an effective and capable UN force.

从长远来看， 塞拉利昂的最大希望是拥有一支有效和有能力的联合国部队。

And have the Ukrainians surprised you? They've certainly surprised the Russians. They've turned out to be a pretty effective fighting force and appear to be becoming more effective with the passing of time, unlike the Russians.

乌克兰人让你感到惊讶吗？他们肯定让俄罗斯人感到惊讶。与俄罗斯人不同，他们已经证明是一支非常有效的战斗力量，并且随着时间的推移似乎变得更加有效。