「界線」

(pos:名詞)
<explanation>
yue:將啲嘢分開嘅線（量詞：條）
eng:boundary; border line; demarcation line
<eg>
yue:#劃清界線 (waak6 cing1 gaai3 sin3)
eng:to distance from (literally: to draw a line with somebody)
<eg>
yue:個城市用呢條河做界線，分開南北兩面。 (go3 sing4 si5 jung6 ni1 tiu4 ho4 zou6 gaai3 sin3, fan1 hoi1 naam4 bak1 loeng5 min6)
eng:This river marks the boundary between the southern and northern part of the city.