aperture
noun /ˈæpətʃə(r)/
/ˈæpərtʃʊr/
- (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。
- The soldier fired the rifle through a narrow aperture in a pile of sandbags.
- (specialist) an opening that allows light to reach a lens, especially in cameras
（尤指摄影机等的光圈）孔径 - For flash photography, set the aperture at f. 5.6.
用闪光照相，要把光圈孔径定为 5.6。 - Open up the lens aperture to maximize the brightness of the shot.
打开镜头孔径，使照片亮度变为最大。 - Binoculars of this aperture are very expensive.
这个光圈的双筒望远镜很贵。
- For flash photography, set the aperture at f. 5.6.
词源late Middle English: from Latin apertura, from apert- ‘opened’, from aperire ‘to open’.