[with obj.]divide into two parts 把…分为两个部分 a landscape of ploughland bisected by long straight roads. 被一些很长的笔直大路分成两半的耕地块。 ■(Geometry)divide (a line, angle, or shape) into two exactly equal parts (几何)把…二等分
派生 bisection noun bisector noun 语源
mid 17th cent.: from bi- 'two' + Latin sect- (from secare 'to cut')