语言选择:
免费网上英汉字典|3Dict

nitrogen cycle

资料来源 : WordNet®

nitrogen cycle
     n : the circulation of nitrogen; nitrates from the soil are
         absorbed by plants which are eaten by animals that die
         and decay returning the nitrogen back to the soil
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