bur

1.detach a check from the checkbook; detach burs from one's coat.

从支票簿上撕一张支票；取上附东西

2.He picked off the burs that had stuck to his overcoat.

他在外上刺果。

3.Our experimental evidence indicates that subjects do vote instrumentally, bur instrumental voting may lot fully explain voter turnouts in some real elections.

实验结果显示他们确实会因此而投票，但投票工具论无法完全解释某些现实选举中投票率。