sieve

We can separate the stones out with a sieve.

我们可以用一个筛子把石头分离出来。

The next day the team began to sieve the loose, sandy silt around the spot—more hand bones and foot bones turned up.

第二天，考察队开始在现场周围用筛子过滤松散的沙质粉土，他们又陆续发现了更多的手骨和足骨。