Brilliant shafts radiated from the convexity of the arch, coming and going silently.

光柱从拱门的凸起出来， 无声无息地来去去去。

There are terms like convexity and duration and there are mathematical symbols, but people don't really use those very much on a day-to-day basis.

其中有凸度、持续时间等术语以数学符号，但人们在日常生活中并不经常使用它们。

He regarded the delicate lines of her profile, and the small, tight, applelike convexities of her bodice, so different from Arabella's amplitudes.

他她轮廓的精致线条，以她紧身胸衣小巧、紧实、苹果般的凸起，与阿拉贝拉的振幅截然不同。