拉丁文 potis 是指有力量，有能力的意思。
potis = powerful
现在我们来看看以 pot- 为字首的字吧！
1. potent (adj.) 强而有力的；有效的
The Berlin Wall was a potent symbol of the Cold War.
柏林围墙是冷战的有力象征。
2. potence (n.) 潜力；效能；势力
The drug has lost its potence due to its exposure to moisture.
药因为受潮而失效。
3. potentate (n.) 有权势者；统治者
-ate 是「人」的意思。
People rose up against the despotic rule of their potentate.
人们反抗君主的专制统治。
4. potential (adj.) 可能的；潜在的
Many potential customers are waiting for a fall in prices before buying.
很多潜在的顾客都在等着降价再购买。
5. potentiality (n.) 可能性；潜力
The potentialities of human are inexhaustible.
人类有无穷的潜力。
6. potentiate (v.) 强化；赋予力量
-iate 是 make 的意思。
potentiate = potent + iate
= powerful + make
Drugs potentiate the effect of alcohol.
药物有加强酒精效果的作用。
im-+pot-
im- 有 not 的意思。
1. impotent (adj.) 无力的；虚弱的
We are quite impotent towards the dictatorship of the company.
对于公司内部的独裁，我们深感无能为力。
2. impotence (n.) 无力；虚弱
Smoking may reduce blood flow, therefore causing impotence.
吸烟可能会减少血液流动，引起无力及虚弱。
omni-+pot-
omni- 有 all 的意思
omnipotent (adj.) 全能的
omnipotent = omni + pot + ent
= all + power + adj.
An omniscient and omnipotent God must be above such humanlike constraints.
全知与全能的上帝理当超越人类能力的限制。
pre-+pot-
pre- 是 before 的意思
prepotent (adj.) 非常优势的
You’re in a prepotent position.
你处于非常有利的地位。
