If the assistant referee is on the line, he can see whether the ball is over the line.
如果助理裁判在门线上，他会看到皮球是否过线。
No Chinese referee was placed on the 11-person referee list, with only Mu Yuxin appointed as an assistant referee.
在助理裁判名单中，也仅有穆宇欣一人。
It's easy to make mistakes and we've all seen examples where the referee and assistant referee can't see if a ball has crossed the line or not.
很容易犯错，我们都已经看到了裁判和助理裁判在球是否过线问题上犯的错误。
The assistant referee should enhance the ability of offside sanctions through strengthening the ability of choosing position, improving psychological quality and enhancing resolution.
指出助理裁判员应加强选位能力、提高心理素质和决断能力，从而提高判罚越位的能力。
The assistant referee should enhance the ability of offside sanctions through strengthening the ability of choosing position, improving psychological quality and enhancing resolution.
指出助理裁判员应加强选位能力、提高心理素质和决断能力，从而提高判罚越位的能力。
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