And for people who use their voices a lot, like singers or professional speakers, get voice training and use an amplifier.

VOA: special.2009.09.02

People are already shaking their heads over me and any immediate God further professional use on my part of the word "God" except as a familiar, healthy American expletive will be taken or rather confirmed as the very worst kind of name dropping and a sure sign that I'm going straight to the dogs.

人们经常对我表示不同意，以及对,我一用那个字“,除非作为熟悉的健康的美式感叹词或咒骂词时,它们会被认为是最差的名字,也肯定是我向那些狗前进的标志。

耶鲁公开课 - 1945年后的美国小说课程节选

But still is very professional and you can use it in any setting, business or casual.

但它也同样可以是很专业的表达，可以用在商务或是生活的各种语境。

Is it okay 课堂 - SpeakingMax英语口语达人