A: China-India border has never been officially demarcated.
答：中印边界从未正式划定。
The value of global commodities, such as oil, is also generally demarcated in US dollars.
全球商品价值例如石油，都是用美元来定价的。
The playing area is demarcated by a white line.
运动场地以白线为界。
The playing area is demarcated by a white line.
运动场地以白线为界。
应用推荐