base line

汉语翻译

英语解释：

名词 base line:

1. an imaginary line or standard by which things are measured or compared
   同义词：baseline
2. the back line bounding each end of a tennis or handball court; when serving the server must not step over this line
   同义词：service line, baseline
3. the lines a baseball player must follow while running the bases
   同义词：baseline