pick over

动词 pick over:

1. separate or remove
   同义词：sieve out

1. Pick over the lentils carefully in case there are any stones amongst them.
   把这些豆子里的沙粒挑出去。
2. He picked over the tomatoes, looking for the ripest ones.
   他把西红柿拿起来仔细看，要挑选最熟的。