Pinhole

(noun.) a small puncture that might have been made by a pin.

编辑:罗达

• But the least crevice is sufficient for the purpose; a pinhole will do the business. 本杰明·富兰克林. 富兰克林自传.
• We never expect to see around a corner, and if we wish to see through pinholes in three separate pieces of cardboard, we place the cardboards so that the three holes are in a straight line. 伯莎M.克拉克. 科学通论.
• The candle cannot be seen unless the three pinholes are in a strait line. 伯莎M.克拉克. 科学通论.

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