Four thousand troops have been reorganized into a fighting force.
4000人的军队已经被改编成了一支战斗力强的精锐部队。
《柯林斯英汉双解大词典》
2
They did not rise against America's invading forcefour years ago, as some feared they might.
由于一些人担心他们的力量（过于弱小），四年前他们没有起来抵抗美国人的入侵。
3
Mr Nash says there is “a nice little race” to be among the first 30 countries whose ratification would bring the treaty into force (four did so immediately).