电话里的声音清晰洪亮。

The voice on the phone was clear and strong.

《牛津词典》

安德鲁狠狠地打了他一记耳光，声音清晰响亮。

There was a resounding slap as Andrew struck him violently across the face.

《柯林斯英汉双解大词典》

一定是什么地方有雷雨，因为画面不太清晰，声音也不清楚。

There must be a thunder storm in some place because the picture isn't very sharp and the sound isn't clear.

youdao

So even that wasn't loud enough okay, so we we really need to get people-- That was very clear, very nice, but we need people to stand up and shout, or these people at the back can't hear. So your name is?

这样声音还是太小,所以我希望,之前的同学的解释清晰正确,但以后请大家站起来大声点说,否则后面的听不到,你的名字是

耶鲁公开课 - 博弈论课程节选