To disambiguate the meaning of animal signals, such as a string of dolphin clicks or whalesong, scientists needed some inkling of where meaning-encoding units began and ended, Reiss explained.

赖斯解释说，为了消除动物信号含义的歧义，例如一串海豚的咔嗒声或鲸鱼的鸣叫声，科学家需要了解意义编码单元的开始和结束位置。