1樓：范傑
這種就不要鑽牛角尖了，電光火石的一剎那，防守球員面對來球，把手背在身後，不是常規的防守動作，出現概率極小，對助理裁判員不做更多要求
2樓：蔡少天
不算的。
@harbuzi引用的規則解釋裡提到了"The arms are not included in this definition.」 一般把它理解成包含 player 和 opponent。
3樓：harbuzi
A player is in an offside position if three conditions are met: first, the player must be on the opposing team's half of the field. Second, the player must be in front of the ball.
And third, there must be fewer than two opposing players between him and the opposing goal line, with the goalkeeper counting as an opposing player for these purposes. It is not necessary that the goalkeeper be one of the last two opponents. Any attacker that is level with or behind the ball is not in an offside position and may never be sanctioned for an offside offence.
IFAB has clarified in the 2009–2010 Laws of the Game that a player temporarily off the field of play is considered to be ON the boundary line at the point that he crossed over the boundary line.[1]
The 2005 edition of the Laws of the Game included a new International Football Association Board decision that stated being "nearer to an opponent's goal line" meant that "any part of his head, body or feet is nearer to his opponents' goal line than both the ball and the second-last opponent (the last opponent typically being the goalkeeper). The arms are not included in this definition."[2] This is taken to mean that any part of the attacking player named in this decision has to be past the part of the second-last defender closest to his goal line (excluding the arms) and past the part of the ball closest to the defenders' goal line.
Regardless of position, there is no offside offence if a player receives the ball directly from a corner kick, goal kick, or throw-in. However, an offside offence may occur if a player receives the ball directly from either a direct free kick or an indirect free kick.引自：
源自：http://www.
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