1. on a dark ground in white or yellow letters, or on a light ground in black letters, such letters to be of a length not less than one decimetre, and of proportionate breadth; 如是深色底则用白色或黄色字母标记,如是浅色底则用黑色字母标记,该等字母的高度须不少于1分米,阔度则须与高度相称;
英英解释
n.
1. a metric unit of length equal to one tenth of a meter