Definition
to examine a collection of items carefully, selecting those you desire or discarding those you do not.
仔细挑选；甄选，精选
While picking fresh fruits at the market, the customer carefully picks over the ripest ones.
在市场挑选新鲜水果时，顾客仔细挑选最成熟的。
The workers pick over all the materials in the factory to ensure they select the best for production.
工人们在工厂里仔细挑选所有材料，以确保选择最好的用于生产。
She picks over each book in the second-hand bookstore, ensuring every book meets her needs.
她在二手书店里仔细挑选每一本书，确保每本书都符合她的需求。