比利時隊的盧卡庫替補出場，發揮了至關重要的作用。

Substitutes have made a big impact at the World Cup, and there could be more of them in four years' time.

替補球員在世界杯上起到了至關重要的作用，4年之后，可能會有更多替補球員有登場亮相的機會。

FIFA's coaching advisers will propose before the 2018 World Cup kicks off that teams can use a fourth substitute in extra time.

國際足聯的教練顧問們將在2018年世界杯開賽之前提議，在世界杯的加時賽中可以派遣第4名替補上場。

Up to three replacements are currently allowed, even when knockout matches go to 30 extra minutes after scores are level in regulation time.

截至目前，比賽允許3名替補出場，淘汰賽階段加上30分鐘的加時賽也是如此。

It is said changing the rules could see fewer players struggle with muscle problems in high-intensity matches.

有人認為，規則上的改變有助于運動員在高強度的比賽中避免肌肉出現問題。

"It's a good idea. Only in extra time. Maybe if someone is injured, why not?" the former France coach said.

前法國主帥霍利爾表示：這是個好主意。只在加時賽實行。萬一有人受傷了怎么辦？為什么不呢？