The legal system frame not sound etc., is all an existing problem.

法制框架不健全等，都是现存的问题。

youdao

A set of formulas has been developed to calculate the atmospheric temperature, density, pressure, the speed of sound etc. of Standard Atmosphere 1976.

本文给出了计算1976标准大气表中温度、密度、压力、音速等诸参数的数学表达式。

youdao

The source of this paradox is electronic anti-noise which creates sound waves to cancel out unwanted noise, such as rattles, blare, etc.

这种矛盾的根源是电子抗噪，它会产生声波来抵消不想要的噪音，如响尾音、刺耳的鸣响等。

youdao

"The proposal would deal with the purchase over the internet of virtual goods - sound, music, etc - which you can download, " he said.

BBC: VAT plan for 'virtual' internet sales

That article is still worth a read but I got one thing wrong: the Germans - indeed the policy elite that surrounds them, committed to sound money, balanced books etc - have taken control of and crashed southern Europe but made no moves towards a fiscal union.

BBC: How the fate of Europe could be decided 'within hours'

And we wrap up with some great tips when considering music, not the least of which is that, according to Mark and Dave, every brand should have, along with their visual identity (e.g. logo, color palette, etc.), a sound identity as well.

FORBES: Music Is The Great Uniting Language. But Are Brands Using It Correctly?