But this is easier said than done; the largest farms in Europe and the U.S. can cover thousands of acres.
但这说起来容易做起来难;在欧洲和美国,最大的农场可以覆盖数千英亩。
You can remove the ground cover and harvest the carrots as they are needed.
VOA: special.2009.02.24
And as you can see, in addition to the introduction, the cover advertises also a portrait of the author.
你们可以看到,除了引言,封面的宣传也是作者的画像。
Moving a stack of size 3, again, if I want to go over there, I need to make sure I can put the spare one over here before I move the bottom one, I can't cover up any of the smaller ones with the larger one, but I can get it there.
移动上面的三个圆盘的话,我在移动最底下的圆盘之前,同样要确保剩下的,是在另外一个柱子上,因为我不能把大的圆盘,放在小的上面。
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