Translation:Be quiet, otherwise people will hear us!
( ͡° ͜ʖ ͡°)
Adamo kaj Sofia!
Is the usage of "oni" instead of "iu" normal?
Why isn't it aŭdus?
-us is more related to probability (people /could/ hear us) while -os is a possibility (people /will/ hear us).
'aŭdus' suggests that they might hear you if you aren't quiet, while 'aŭdos' suggests that they definitely will hear you