His knowledge of geography is negligible. 他的地理知識少得可憐。
However, most scientists do not agree that the Piri Reis map is any more accurate than might be expected based on contemporary geographical knowledge and guesswork. 然而，大多數科學(xué)家并不同意皮里雷斯地圖比同時(shí)代的地理知識和臆測更為精確。
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