G cells may possess endocrine, paracrine and exocrine functions simultaneously.是什么意思？

G cells may possess endocrine, paracrine and exocrine functions simultaneously.

G细胞可能同时具备内分泌 、 旁分泌和外分泌方式.

cells

n. <生>细胞( cell的名词复数 )，小牢房，（修道士或修女住的）小房间，电池；

例句
An increasing body of evidence suggests that all of us have cancer cells in our bodies at times during our lives.
越来越多的证据表明，我们所有人一生中体内时有癌细胞存在。

May

aux. 可以，也许，会，但愿；n. [May]五月，山楂属植物，（五朔节装饰用的）绿枝花枝，（春天开花的）绣线菊属植物；

例句
The way that American history is taught may change in order to accommodate some more of those cultures.
美国历史的授课方式可能会为了照顾到更多的文化而作改变。

possess

vt. 拥有，掌握，懂得，主宰，缠住，迷住；

例句
They possess a formidable arsenal of rifles, machine guns, landmines and teargas.
他们持有的步枪、机枪、地雷和催泪弹数量惊人。

endocrine

adj. 内分泌（腺）的，激素的；

例句
...the hormones secreted by our endocrine glands.
人体内分泌腺分泌的荷尔蒙

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

exocrine

adj. （腺）外分泌的；

例句
To investigate the exocrine compounds of coptotermes formosanus dinergate exocrine concentrate was obtained by different extraction.
本文主要讨论采用不同提取方法所得家白蚁兵蚁的外分泌化合物的组成及相对含量的变化.

functions

n. 功能( function的名词复数 )，依赖别事物的事物，函数，官能；

例句
Attempts to correlate specific language functions with particular parts of the brain have not advanced very far...
人们试图把特定的语言功能与大脑的某些特定部位联系起来，这一努力目前还没有取得很大进展。

simultaneously

adv. 同时地，一壁，齐，一齐；

例句
Hundreds of fireworks burst simultaneously in midair...
成百上千朵烟花在半空中同时绽放。