out of date

例句：

1. 1.The old books are out of date and should be replaced.
   这些旧书已经过时，应该被替换。
2. 2.The technology is out of date compared to what's new in the market.
   这项技术与市场上的新科技相比已经过时。
3. 3.Many fashion trends have already been out of date for several years.
   许多时尚趋势已经过时好几年了。