须至 xūzhì must Definitions Defs Origin Strokes Stroke Words Sentences Sents 3 sentences 儿童必须至少4岁。 értóng bìxū zhìshǎo4 suì. Children must be at least 4 years old. Source: CCMatrix儿童必须至少七岁才能参加。 értóng bìxū zhìshǎo qī suì cáinéng cānjiā. Children must be at least 7 years old to participate. Source: CCMatrix我们所有的客人必须至少年满18岁。 wǒmen suǒyǒu de kèren bìxū zhìshǎo niánmǎn18 suì. All of our guests must be at least 18 years of age. Source: CCMatrix