圣劳伦斯河：它是北美洲-五大湖的出水道
From the mouth of Lake Ontario to Montreal「/ˌmɑːntriˈɔːl/」, Canada is the upper reaches, about 300 kilometers long;
From the mouth of Lake Ontario to Montreal「/ˌmɑːntriˈɔːl/」, Canada is the upper reaches, about 300 kilometers long;