There are three types of seasonal influenza – A, B and C. Type A influenza viruses are further typed into subtypes according to different kinds and combinations of virus surface proteins.

有三种类型的季节性流感——甲型、乙型和丙型。 根据病毒表面蛋白不同的种类和结合情况，甲型流感病毒又进一步分类为亚型。

youdao

However, PHP itself is written in c, and memory problems deep in PHP's core surface occasionally.

然而，PHP本身也是使用c语言编写的，有时记忆问题深至PHP的核面。

youdao

Say when you're at the front of C prime, your thumb points to the right, your index points up because that's where the surface is, and then your middle finger will point out.

你在曲线C的前端，你的拇指指向右边，你给指出来了，因为那就是这个表面所在，然后你的中指就会指出。

youdao

The surface of the hepatitis C protease turned out to be flat.

FORBES: Magazine Article

It is actually a completely mainstream view that doubling carbon dioxide, ipso facto, will only result in a net surface warming of about 1 degree (C).

FORBES: What Happens When You Rub Two Climatologists Together?

S.C Johnson has apparently started offering phone and electronic friendly sanitizers, which would not damage the phones surface or electronics.

FORBES: Can Your Smartphone Spread The Flu?