n.选择，大批物品中剔出劣质货 v.挑选，剔除( cull的现在分词 )
The culling of seal cubs has led to an outcry from environmental groups.
选择性宰杀小海豹已经招来环保组织的强烈抗议。
The mathematicians turned to culling periodic solutions.
数学家们转而去挑选周期解.
It took us a week to find you, a week of culling out prejudice and hatred.
我们花了一个星期的时间找到你们, 把偏见和憎恨剔除出去.