[問題] PP3 CR2 79

[chihyi091 (靈芝)]

79.

The country of Baurisia has, until now, been self-sufficient in both grain
and meat.  However, with growing prosperity in Baurisia has come a steadily
increasing per capita consumption of meat, and it takes several pounds of
grain to produce one pound of meat.  Therefore, since per capita income in
Baurisia is almost certain to rise further but increases in domestic grain
production are highly unlikely, Baurisia is soon likely to become an importer
of grain.

Which of the following, if true, most seriously weakens the argument?

正解是:
D. It is more economical for Baurisians to import meat than grain.

這題答案我沒問題
我想問的是題目的:
"it takes several pounds of grain to produce one pound of meat"
是什麼意思呢?
單字都不難 可是放在一起我怎麼覺得句意怪怪的...

先謝謝回答

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推 Depp:牛/羊要吃穀物,所以要換算成需要一些穀物來生產肉類
→ chihyi091:原來是這樣啊 了解! 謝謝D大