在中央苏区由于战争频繁发生，产生了大批伤员，并造成了传染病的流行，迫切需要医生来治疗。
Because of the frequent wars in the Central Soviet Area, a large number of the wounded and the prevalence of infectious diseases produced, which caused the urgent need for doctors.
但现代战争涉及到的作战对象多、协同关系复杂、战术机动频繁，建立一个完善的态势估计模型存在很多困难。
But because of the large quantity of targets , complex cooperation relations and frequent tactical movements in modern wars, it is very difficult to set up a perfect model of situation assessment.
我们不得不就一系列的规则达成一致的协议简称礼仪和礼貌，这使得我们的频繁见面变得能够让彼此忍受并且不会引发“战争”。
We have had to agree on a certain set of rules, called etiquette and politeness, to make this frequent meeting tolerable and that we need not come to open war.
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