Insulin is produced commercially from animals.是什么意思？

Insulin is produced commercially from animals.

为获利从动物体内提取胰岛素。

insulin

n. 胰岛素；

例句
PM 2.5 exaggerates diet - induced insulin resistance, adipose inflammation, and visceral adiposity.
细微大气颗粒物PM2.5)能增加饮食引起的胰岛素抵抗 、 脂肪炎症反应 、 内脏肥胖.

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

produced

adj. （叶子等）畸形伸长的，引长的；v. 生产( produce的过去式和过去分词 )，产生，制作，创作；

例句
Almost like an accident of nature, this family has produced more talent than seems possible.
就像是天缘巧合，这个家族不可思议地人才辈出。

commercially

adv. 商业上，通商上；

例句
Now you've talked about work on daffodils, what about other commercially important flowers, like roses?...
既然你们已谈到了种植水仙花，那么其他具有重要商业价值的花卉呢，比如玫瑰？

from

prep. （表示时间）从…，（表示原因）因为，（表示来源）来自…，（表示分离）与…分离[隔开]；

例句
...an abortive attempt to prevent the current President from taking office.
企图阻止现任总统连任的失败尝试

animals

n. 动物( animal的名词复数 )，兽，兽性，粗野残暴的人；

例句
They are saying, with varying degrees of absolutism, that animals should not be exploited at all.
他们都多多少少带有些绝对地说动物根本不该被拿来利用。