语言选择:
免费网上英汉字典|3Dict

pectoral fin

资料来源 : WordNet®

pectoral fin
     n : either of a pair of fins situated just behind the head in
         fishes that help control the direction of movement
依字母排序 : A B C D E F G H I J K L M N O P Q R S T U V W X Y Z