白线

• linea alba
• white line

例句

1. 运动场地以白线为界。
   The playing area is demarcated by a white line.
2. 这些白线把赛区分成各个部分。
   White lines divide the playing area into sections.
3. 我们已用白线画出运动场地。
   We have marked the playing area off with a white line.