There was a man who was tilling soil in the center of the square.

广场中央有一个人在耕地。

Earthworms, for example, were introduced into North America by European settlers and have been inching across the continent ever since — tilling soil and improving crop yields as they go.

例如，蚯蚓由欧洲定居者引入北美，并从那时起，这些蚯蚓逐渐扩展到整个大陆 帮助耕耘土壤以及提高农作物的产率。

Young New Englanders, weary of tilling the stony soil of their native states, poured through New York and Pennsylvania, some settling on the northern bank of the Ohio but most of them in the Lake region.

年轻的新英格兰人厌倦了在他们家乡多石的土地上耕作，涌入纽约和宾夕法尼亚，一些人定居在俄亥俄河北岸， 但大多数人在湖区定居。