base line

漢語翻譯

英文解釋：

名詞 base line:

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