[翻译] 公元1405年，明朝的统治者为了稳固边防（border defense）和开展海上贸易，派郑和下西洋（the Western Sea）。
In 1405 AD，the ruler of the Ming Dynasty sent Zheng He on voyage to Western Seas in order to strengthen border defense and develop trade by sea.
[翻译] 公元1405年，明朝的统治者为了稳固边防（border defense）和开展海上贸易，派郑和下西洋（the Western Sea）。
In 1405 AD，the ruler of the Ming Dynasty sent Zheng He on voyage to Western Seas in order to strengthen border defense and develop trade by sea.
