名詞 placer:

1. an alluvial deposit that contains particles of some valuable mineral

1. A place where a placer deposit is washed to extract its mineral content.
   砂礦開采地一個(gè)用來清洗出有用礦物的砂礦開采地

plac.er

n.（名詞）
A glacial or alluvial deposit of sand or gravel containing eroded particles of valuable minerals.
砂礦，砂積礦床：一種砂礫或碎石的冰河沉積物或沖積沉積物，包括有價(jià)值的礦物成份
A place where a placer deposit is washed to extract its mineral content.
砂礦開采地：一個(gè)用來清洗出有用礦物的砂礦開采地

來源：
Spanish [shoal, placer]
西班牙語 [淺灘，砂礦]
from Catalan placer [shoal]
源自 加泰羅尼亞語 placer [淺灘]
from plassa [place]
源自 plassa [放置]
from Medieval Latin placea * see place
源自 中世紀(jì)拉丁語 placea *參見 place