例文・使い方で印象づける「perforation」の覚え方
スポンサーリンク...Immediately below the aperture of the perforation is the egg chamber: ashort, tunnel-shaped cavity which occupies almost the whole distancebetween one opening and that lying below it... 
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...Let us select those acorns which have been recently perforated: that isto say, those in which the perforation is not yet surrounded by thebrown ring which appears in course of time...
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...Other arm bones found showed the same olecranal perforation...
Gerard Fowke 「Archeological Investigations」
...The rim is rounded, and the opposite faces are concave,with a perforation in the middle...
Jesse Walter Fewkes 「Archeological Expedition to Arizona in 1895」
...There is no distinct handle, but provision is made for thethumb by a deep, sloping groove; for the index-finger by a perforation,and for the other three fingers by separate grooves...
Otis T. Mason 「Throwing-sticks in the National Museum」
...He found a perforation at the top forming an arch of great width and height, and above it, at the very summit of the peak, were loose pieces of granite of considerable size...
Matthew Flinders 「A Voyage to Terra Australis」
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catalysts carpenter consolidating
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