linesman
英[?la?nzm?n]
美[?la?nzm?n]
柯林斯高阶英汉双解学习词典释义
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N-COUNT
（足球、网球等运动中的）边线裁判员，巡边员，司线员
A linesman is an official who assists the referee or umpire in games such as football and tennis by indicating when the ball goes over the lines around the edge of the field or court.
英英词典释义
Noun
1. official (in tennis or soccer or football) who assists the referee is some way (especially by watching for off-sides or out of bounds)
2. a person who installs or repairs electrical or telephone lines
行业词典
体育： 司线员；巡边员；
旅游： 助理裁判；司线员；