A waterway in North America, which flows for 3,768 km (2,342 miles) through the Great Lakes and along the course of the St Lawrence River to the Atlantic. It is open along its entire length to ocean-going vessels.
英语词典包含464360条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。