英语翻译

问题描述:

英语翻译
This Contract is executed in two counterparts each in Chinese and English,each of which shall deemed equally authentic.This Contract is in ______ copies,effective since being signed/sealed by both parties.
为什么前面有executed in two counterparts,后面又有in copies呢?

前边是说这个合同按中英文两个版本执行,两个版本有同样的效力.后边的copies 是说一式几份,具体数字没填,从双方签字或盖章之时开始生效.