每个参赛者都应当在预赛开始前确认他们的报名信息。
Every competitor should confirm their registration details before the preliminary round begins.
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their英 /ðeə/|美 /ðɛr/
解释
先行词 every competitor 是性别不明的单数名词，物主代词 their 以单数 they 所有格形式回指。every + 单数名词在语义上涵盖所有人但语法上是单数第三人称。
Every competitor should confirm their registration details before the preliminary round begins.
先行词 every competitor 是性别不明的单数名词，物主代词 their 以单数 they 所有格形式回指。every + 单数名词在语义上涵盖所有人但语法上是单数第三人称。