动词 shoal:

1. make shallow

2. become shallow

shoaladj.浅的n.浅水处；沙洲；鱼群；一大群v.（使)变浅；群聚shoal evolution浅滩演变shoaling effect滩浅影响shoaling habitat成群栖所,集群栖所shoals of prawns成群的对虾shoals of herring鲱鱼群shoal area of sand沙洲浅水区shoaling properties变浅性shoal tidal channel浅滩潮道shoal retreat massif浅滩后退砂体shoaling coefficient浅水系数