able to be heard
听得见的：
ultrasound is audible to dogs.
狗能听见超声。
American Football a change of playing tactics called by the quarterback at the line of scrimmage
【美橄】（在争球线上四分卫叫喊的）改变打法。
派生词
audibility
noun
audibly
adverb 词源
late 15th cent.: from late Latin audibilis, from audire 'hear'.