... → valid 有效的，有据的，正当的；有效期 be valid for two years 有效期两年； a valid excuse 有根据的理由 ...
基于14个网页-相关网页
本协议从签署之日开始有效期两年。
This agreement is effective for two years from the date of signing.
证书有效期两年。
一款设计成只能维持其有效生命周期的绿色手机，两年的有效期到了，它就会散开，以便于回收。
Green mobile phones designed to last only for the length of its functional life cycle, they fall apart for easy recycling after two years are up. [link].
应用推荐