valid [ˈvælɪd]

以下由轻松背单词网站提供

adj.有确实根据的；有效的；正当的，合法的

based on truth or reason ; able to be accepted

His claim to own the house is valid. 他主张对此屋的所有权有效。
Do you have valid reasons for your absence? 你的缺席有正当理由吗？