To cut the leading edge of the pie slices in a simple circle pattern, an image is created with a transparent circle in the middle.

为了切去简单圆形图案中饼图分区的前缘，将创建一张中间带有透明圆形的图像。

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We were in a room splashed with vivid hues and packed with chairs of varying shapes and sizes, arranged in a semi-circle pattern.

那间屋子的墙上涂满了各种鲜艳的颜色，形状大小各异的椅子围成一个半圆，簇拥着舞台。

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This is the center circle of the pattern.

这是图案的中心圈。

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Inside the circle, given away by its small helical pattern, is a smear of dna dried onto its surface.

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The time-sensitive pattern created by that pinch-circle motion, along with the motion involved in rotating the dial, are complex enough that Memon says a study of about 100 users has shown it can identify users with about 2% false positives and 2% false negatives.

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