A + 俗称 + B
The verb 俗称 (súchēng) means "commonly known as" or "colloquially called." It is used to introduce a popular or informal name for something. For example, you might say a formal term 俗称 followed by its everyday name.
这种鱼俗称"胖头鱼",学名叫鳙鱼。
Zhè zhǒng yú súchēng "pàngtóuyú", xuémíng jiào yōngyú.
This fish is commonly called "fathead fish"; its scientific name is bighead carp.
番茄俗称西红柿,是很常见的蔬菜。
Fānqié súchēng xīhóngshì, shì hěn chángjiàn de shūcài.
Tomatoes are commonly called "xihongshi" and are a very common vegetable.
这种病俗称"老寒腿",冬天特别容易犯。
Zhè zhǒng bìng súchēng "lǎo hán tuǐ", dōngtiān tèbié róngyì fàn.
This condition is commonly called "old cold legs" and flares up especially easily in winter.