to change in order to fit a different situation, or to repair something slightly

After living abroad for so long, he found it difficult to readjust to life at home. 在国外生活了那么长时间后，他觉得很难适应国内的生活。

The clock automatically readjusts when you enter a new time zone. 你进入另一个时区后，这个钟表就会自动调整时间。

The machines were old and constantly needed readjusting. 这些机器太陈旧了，需要经常维修。