lay的过去式和过去分词

　　The cards need to be laid out in two rows.

　　这些卡片需摆放成两排。

　　Wages have been frozen and workers laid off.

　　工资已被冻结，员工们下岗了。

　　Everyone here has a really laid-back attitude.

　　这里的每个人都很放松。