The basic unit of society is the family.

社会的基本单位是家庭。

《牛津词典》

The page is the basic unit of measure.

页面是基本衡量单位。

youdao

An assertion is the basic unit of policy.

断言是策略的基本单元。

youdao

By the way, in what I'm saying, I oversimplify by supposing that the basic unit of language is a word.

因为我想说的是，我们现在是把语言的基本单位简单化了。

耶鲁公开课 - 文学理论导论课程节选

So, one of the discoveries of psychology is that the basic unit of the brain appears to be the neuron.

心理学的发现之一,就是,神经元是大脑的基本单元

耶鲁公开课 - 心理学导论课程节选

Sometimes the basic unit is the phrase, but some other times the basic unit is the phoneme or if one's studying language as a system of writing it might be the syllable.

有时候基本单位是一个词组，有时候则是一个音素,也就是在写作的研究中的,一个音节。

耶鲁公开课 - 文学理论导论课程节选

The basic unit of action in FTL, along with lightspeed travel, is ship-to-ship combat.

FORBES: Three Games For The Sick: Things To Do As Gamers When You're (Half) Dead

The basic unit is a 2U box with four Nutanix nodes iside it.

FORBES: Explosive Growth in Flash Memory Enterprise Applications

The basic unit of shoemaking is the last a sort of mannequin, in the shape of a human foot, upon which the shoe is constructed.

NEWYORKER: Sole Mate