HINTS:

十以上数字、年份、百分率、金额等都用阿拉伯数字表示，数字采用千位逗号隔断

St. Lawrence
The Great Lakes are the greatest wonder of America. It is the largest group of lakes in the world and the biggest body of fresh water. It is hard to grasp that a land should contain several freshwater seas so big that a ship can steam out of sight of the shore for a day or more or even founder in giant waves, as happens from time to time. Let us approach the lakes the best way. We should get on board a ship and start from the Lake Ontario. It is the smallest of the Great Lakes, but compared with the other lakes, Ontario is more illusive. This Niagara Falls with its sheer thunderous drop has been an illusive barrier between this and other lakes, and the St. Lawrence sluicing out its eastern end draws Ontario's attention seaward. The Welland Canal, 27 miles long, with eight locks to lift the ship over the Niagara Falls Escarpment to Lake Erie, has beautiful scenery on both sides.
五大湖是美洲最壮观的景观，是世界上最大的湖群和最大的淡水储存区。很难想象，一片陆地上的几个淡水湖泊可以大到可以让一艘船出航一天而不靠岸，甚至有时经常翻起巨浪。　　 让我们以最佳的方式来了解五大湖。我们可以从安大略湖上船。安大略湖是五大湖中最小的，但是比起其它湖泊，它又是最迷幻的。尼亚加拉大瀑布带着它清澈的水花轰鸣而下，并成为安大略湖与别的湖泊难以分辨的界岭。圣劳伦斯河位于安大略湖东侧，湖水在此注入海洋。韦兰运河长27英里，有8个船闸可以将船从尼亚加拉瀑布悬崖提升至伊利湖，在其两侧均有怡人的风景。