轨迹 guǐjì HSK7 track Definitions Defs Origin Strokes Stroke Words Sentences Sents Showing: locus All meanings 5 guǐjì 5 track 2trajectory 2locus 1 1 sentence for 轨迹 (guǐjì — locus) 圆是平面上到定点距离等于定长的点的轨迹。 yuán shì píngmiàn shàng dào dìngdiǎn jùlí děngyú dìngcháng de diǎn de guǐjì. A circle is the locus of points in a plane that are at a fixed distance from a fixed point. Source: Dong Chinese Dictionary