摘要：From the mouth of Lake Ontario to Montreal「/ˌmɑːntriˈɔːl/」, Canada is the upper reaches, about 300 kilometers long;
圣劳伦斯河：
The Saint Lawrence River:
它长为1287千米；
It is 1,287 kilometers long;
它是北美洲东部大河；
It is a major river in eastern North America;
它是北美洲-五大湖的出水道；
It is the outlet of the Great Lakes in North America;
它流域面积约为30万平方千米；
Its drainage area is approximately 300,000 square kilometers;
它从安大略湖东北端流出，向东北注入大西洋圣劳伦斯湾。
It flows out from the northeastern end of Lake Ontario and flows northeastward into the Gulf of Saint Lawrence of the Atlantic Ocean.
上游河段：
The upper reaches:
从安大略湖湖口至加拿大-蒙特利尔为上游 ，长约300千米；
From the mouth of Lake Ontario to Montreal「/ˌmɑːntriˈɔːl/」, Canada is the upper reaches, about 300 kilometers long;
上游河段河床比降大，多急流险滩，水力蕴藏丰富，对航行不利。
The riverbed gradient of the upper reaches is large, with many rapids and dangerous shoals, rich in hydraulic「/haɪˈdrɔːlɪk/」 power, which is unfavorable for navigation.
中游河段：
The middle reaches:
从加拿大-蒙特利尔至加拿大-魁北克市为中游，长256千米；
From Montreal, Canada to Quebec「/kəˈbek/」City, Canada is the middle reaches, 256 kilometers long;
下游河段：
The lower reaches:
加拿大-魁北克城以下为下游，长700多千米。
From Montreal, Canada to Quebec City, Canada is the middle reaches, 256 kilometers long。
圣劳伦斯河流域内降水丰沛，加上有五大湖调节，水量大而稳定；
The Saint Lawrence River basin has abundant precipitation and is regulated by the Great Lakes, with large and stable water volume;
圣劳伦斯河水系对于美国和加拿大都有地理和经济上的极大重要性；
The Saint Lawrence River system is of great geographical and economic importance to both the United States and Canada;
它贯通大西洋与大湖盆地，密切了大湖和大西洋的关系，具有重要的经济意义。
It connects the Atlantic Ocean and the Great Lakes Basin, closely relates the Great Lakes and the Atlantic Ocean, and has important economic significance.
单词：
1.Saint Lawrence「/seɪnt ˈlɔːrəns/」圣劳伦斯
2.outlet「/ˈaʊtlet/」
专营店；经销店；排出口；
出口；电源插座
3.drainage「/ˈdreɪnɪdʒ/」排水系统；排水
4.Gulf「/ɡʌlf/」海湾；鸿沟，分歧
5.unfavorable「/ʌnˈfeɪvərəbl/」
不宜的；令人不快的；不顺利的
6.basin「/ˈbeɪs(ə)n/」
盆；洗涤槽；流域；盆地
7.abundant「/əˈbʌndənt/」
大量的，丰富的，充足的
8.precipitation「/prɪˌsɪpɪˈteɪʃ(ə)n」
降水，降水量（包括雨、雪、冰等）
9.shoal「/ʃoʊl/」浅滩，沙洲
10.shore「/ʃɔːr/」
（海、湖或大河的）滨，岸
来源：地理爱好者LED一点号