line drawing

线图

A pair of horizontal parallel lines drawn across a shield.

盾形纹章上的横条纹画在盾形纹章上的两条水平的平行线

A line drawn on a weather map or chart linking all points of equal or constant temperature.

恒温线；等温线气象地图或图表上所画的一条连结同温或恒温各点的线