verb · to physically pass through a strategic pass, customs checkpoint, or border

旅客们在过关时需要出示护照。

verb · to successfully get through an ordeal, examination, or test

经过几天的努力，他终于在驾驶考试中过关了。

verb · to meet a required quality, technical, or professional standard

这批新产品的质量完全过关，可以投放市场。