Academic studies have found no evidence so far that older voters have used their power at the ballot box to push for policies that specifically benefit them, though if in future there are many more of them they might start doing so.
出自-2010年12月阅读原文
柯林斯高阶英汉双解学习词典释义
N-COUNT
无记名投票；无记名选举；无记名表决
A ballot is a secret vote in which people select a candidate in an election, or express their opinion about something.