As football begins to consider resumption of competitions across the world following the COVID-19 pandemic, The International Football Association Board (The IFAB) has agreed to make a temporary amendment to the Laws of the Game based on a proposal received from FIFA seeking to protect player welfare.
在COVID-19大流行之后，随着足球运动开始考虑在全世界各地恢复比赛，国际足联理事会（IFAB）已同意根据国际足联提出的一项旨在保护球员福利的建议，对比赛规则作出临时修订。

For competitions which have either started or are intended to start, but are scheduled to be completed by 31 December 2020, the IFAB has approved FIFA’s proposal to introduce a temporary amendment to Law 3 – The Players, which will allow for a maximum of five substitutes to be made per team. However, to avoid disruption to the game, each team will only have three opportunities to make substitutions; substitutions may also be made at half-time.
对于已经开始或打算开始但计划在2020年12月31日前完成的比赛，IFAB已经批准了国际足联提出的对第3号法律《球员》的临时修正案，该修正案将允许每队最多5名替补队员。不过，为避免比赛中断，每队只有三次换人机会；换人也可以在中场休息时进行。

The temporary amendment comes into force with immediate effect, and has been made as matches may be played in a condensed period in different weather conditions, both of which could have impacts on player welfare. The decision on whether to apply this temporary amendment will remain at the discretion of each individual competition organiser, while The IFAB and FIFA will determine at a later stage whether this temporary amendment would need to be extended further (e.g. for competitions due to be completed in 2021).
临时修正案立即生效，因为在不同的天气条件下，比赛可能在短时间内进行，这两种情况都可能影响球员的福利。是否适用本临时修正案的决定将由各竞赛组织者自行决定，而国际单项体育联合会和国际足联将在稍后阶段决定是否需要进一步延长本临时修正案（例如，将于2021年完成的比赛）。

The amendment to Law 3 affects both the 2019/20 and 2020/21 Laws of the Game, with the latter coming into effect as from 1 June 2020.
第3条修正案同时影响2019/20和2020/21比赛法，后者自2020年6月1日起生效。

In relation to competitions in which the video assistant referee (VAR) system is implemented, these competitions are permitted to cease its use upon restart at the discretion of each individual competition organiser. However, where VAR is used, all aspects of the Laws of the Game and, by extension, the VAR protocol will remain in place.
对于已实施视频助理裁判（VAR）系统的比赛，允许这些比赛在重新开始时停止使用，由每个比赛组织者自行决定。然而，在使用VAR的情况下，游戏规则的所有方面，以及通过扩展，VAR协议将保持不变。

Temporary amendment to law3『临时第三条法律修正案』
Law 3 – The Players – Temporary amendment
In summary:总而言之:

Each team will be permitted to use a maximum of five substitutes.
每支球队最多允许使用五名替补队员。

To reduce disruption to the match, each team will have a maximum of three opportunities to make substitutions during the game; substitutions may also be made at half-time.
为了减少对比赛的干扰，每支球队在比赛中最多有三次换人机会；换人也可以在半场进行。

If both teams make a substitution at the same time, this will count as one of the three opportunities for each team.如果两队同时换人，这将算作每队三次机会之一。

Unused substitutions and opportunities are carried forward into extra time.未使用的替补和机会被带入加时赛。

Where competition rules allow an additional substitution in extra time, teams will each have one additional substitution opportunity; substitutions may also be made before the start of extra time and at half-time in extra time.
如果比赛规则允许在加时赛中增加一次换人，各队将有一次额外的换人机会；换人也可以在加时赛开始前和加时赛中场休息时进行。

The use of return substitutes is not an option for senior competitions.
在高级别比赛中被换下的球员不能重回场上。