range of hearingbabysitters should remain within earshot of young children
babysitters should remain within earshot of young children
hail, hearing, sound
volumedistance, sight
in 1607
英语同义词词典收录了63618条英语词条，基本涵盖了全部常用同义词或反义词的辨析及翻译，是英语学习的有利工具。