When on Oct. 12, 1492, Christopher Columbus, the son of a Genoese weaver, stepped ashore on the island he later named San Salvador in the Bahamas, ...是什么意思_When on Oct. 12, 1492, Christopher Columbus, the son of a Genoese weaver, stepped ashore on the island he later named San Salvador in the Bahamas, ...在线翻译_英语_读音_用法_例句