所有你所需要的是一张方格纸、笔、朋友、和你准备去。
All you need is a sheet of checkered paper, a pen and a friend, and you are ready to go.
目前常用的量算面积方法有方格纸法、平行线法、求积仪法。
Graph paper, parallel, and planimeter methods are current tools for acreage calculation.
要测出这条曲线下的面积，例如，可使用方格纸以计数曲线下小方格的数目。
The area below this curve is measured, e. g. by counting small squares if graph paper is used.
“每页都是方格纸，整本可以用松紧带箍住，”他写到，“我把我的名字和地址写到扉页上，并且提供奖励给拾获者。
“The pages were squared and the end-papers held in places with an elastic band, ” he writes. “I wrote my name and address on the front page, offering a reward to the finder.
“每页都是方格纸，整本可以用松紧带箍住，”他写到，“我把我的名字和地址写到扉页上，并且提供奖励给拾获者。
“The pages were squared and the end-papers held in places with an elastic band, ” he writes. “I wrote my name and address on the front page, offering a reward to the finder.
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