earshot
n. 听力所及之范围
例句
Shaun was in the bedroom, out of earshot, watching television.
肖恩在卧室里看电视,听不到。
《柯林斯英汉双解大词典》
We waited until Ted was safely out of earshot before discussing it.
我们一直等到特德保准听不见时才讨论这事。
《牛津词典》
As she came within earshot of the group, she heard her name mentioned.
当她走到能听见这群人说话声时听到有人提她的名字。