- (formal)
a small opening in something 小孔；缝隙 The soldier fired the rifle through a narrow aperture in a pile of sandbags. 士兵从一堆沙袋的一个狭窄缝隙中射出步枪。 The bell ropes passed through apertures in the ceiling. 拉铃用的拉绳从天花板的缝隙里穿过来。
- (specialist)
an opening that allows light to reach a lens, especially in cameras （尤指摄影机等的光圈）孔径
Word Originlate Middle English: from Latin apertura, from apert- ‘opened’, from aperire ‘to open’.