您要查找的是不是：
- 弥散圈figure of confusion
- 最小弥散圈circle of least aberration; circle of least confusion
- 允许to permit
- 弥散圈，朦胧圈diffusion circle
- 对于三角形光圈，我们看到弥散圈不是圆形的，而是三角形的。For a triangular aperture we no longer see a circle of confusion, but rather a triangle of confusion.
- 不允许impermissibility
- 允许的allowable
- 一圈lap
- 请允许beg leave
- 不允许的unallowed
- 甜甜圈baked donut
- 弥散dispersion
- 游泳圈swim ring
- 允许有be patient of
- 商圈Business District
- 请允许我make free
- 挡圈thackeray washer
- 被允许be allowed
- 娱乐圈amusement circles
- 允许偏差allowable deviation
