这就是为什么在多数情况下是对奖金结构，而非奖金数量进行调整。年度奖金现在有更大比例是以股票形式发放，这些股票需要持有到一定年限才能卖出。

That is why most of the changes have been on the composition, not the amount, of bonuses, with a greater percentage of annual payouts now awarded in stock that can't be sold for years.

youdao

由于绝大部分结构在承受地震作用时都已使用一定年限，其耐久性必然随着使用年限的增加发生损伤。

As the majority of structures to withstand earthquakes have been used a certain number of years, its durability inevitably increase as the useful life of damage occur.

youdao