How to say "when their ears stopped ringing"?
&quot;Ears ringing&quot; translated into Chinese is &quot;耳嗚&quot;

https://zh.wikipedia.org/wiki/%E8%80%B3%E9%B8%A3
係指外在環境沒發出聲音卻聽見聲音的一種狀況 (hearing sound when there is no external source of such sound)
最常見的原因是因噪音型聽力損失 (most common cause of this impairment of  hearing ability is loud noise )

“when their ears stopped ringing” could be translated as &quot;等他们的耳嗚停止时&quot;
But &quot;耳嗚&quot; is quite a formal (medical) and literary term. The more colloquial term for &quot;ear ringing&quot; is &quot;耳中嗡嗡作响&quot; therefore,   your sentence could be translated as &quot;等他们耳中的嗡嗡响声停下來时&quot; (when the buzzing sound in their ears stopped)