Thus in geometry you are told to conceive the circumference of a circle as formed of an infinite number of infinitely small straight lines.
譬如,在几何学里我们必须假定,一个圆周的圈线是由无限多喝无限小的直线形成的。
2
In geometry we bisect a circle, or 'cut' it in 'two.
'在我们对分几何一个圆圈,或'削减'在'两个。
3
Once you select the thread geometry, the Length field, and the select Start button, the Circle radio button from the Selection Options and the action mode become active.