randomize|randomized

实验前，我们需要将样本随机排序以避免误差。

Before the experiment, we need to ___randomize the samples to avoid errors.

实验设计需要随机分配参与者以确保结果公正。

The study needs to ___randomize participant assignments to ensure unbiased results.

为了公平起见，老师随机安排了考试座位。

The teacher ___randomized the exam seating to ensure fairness.