半径

bàn jìng

HSK 7–9

Meaning

从圆心到圆上任意一点的线段长度；也比喻周围或附近的范围。

The distance from the center of a circle to any point on its circumference; also used metaphorically to refer to the surrounding area or range.

多用于数学几何中，也可引申用来描述某个中心点周围的区域或影响范围。

Mostly used in geometry, but can also be extended to describe the area or influence around a central point.

1 这个圆的半径是5厘米。 (The radius of this circle is 5 centimeters.)
2 爆炸的半径达到了100米。 (The blast radius reached 100 meters.)
3 在这条街的半径一公里内有很多超市。 (There are many supermarkets within a one-kilometer radius of this street.)
4 他的影响力半径很大，整个行业都受他影响。 (His radius of influence is very large, affecting the entire industry.)
5 我们需要计算这个扇形的半径。 (We need to calculate the radius of this sector.)

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