common frontier

• 共同边界

common frontier的用法和样例：

例句

1. There is no common boundary at which the syllables join, but each is separate and distinct from the rest.
   音节之间没有结合的共同边界，而且每一音节都和其它音节是分离的和截然不同的。
2. The two tremendous continental countries shared a frontier of 4,000 miles in a vast arc from the frozen tundras of Siberia to the stark deserts of Central Asia.
   这两个辽阔的大陆国家的共同边界从西伯利亚冻土地带到中亚细亚荒漠划出一个大弧形，长达四千多英里。