Clonidine comes oral form or as a sustained release skin patch.是什么意思？

Clonidine comes oral form or as a sustained release skin patch.

可乐定有两种类型,一种为椭圆药丸,一种为缓释性的皮肤贴.

clonidine

n. 氯压定，可乐宁，可乐亭（一种降压药）；

例句
The exact site at which clonidine exerts this central effect is not precisely known.
可乐宁发挥中枢作用的确切部位尚不清楚.

comes

n. 伴星，伴引血管；v. 来（ come的第三人称单数 ），到达，达到（认识、理解或相信的程度），出生；

例句
...his calm acceptance of whatever comes his way.
他遇事泰然处之的态度

oral

adj. 口头的，口述的，口服的，属于或关于嘴的，构成或使用言语的；n. （尤指外语考试中的）口试；

例句
The readings you heard earlier were excerpted from a new oral history of Pearl Harbor.
你之前听到的朗读片段节选自一部新的珍珠港口述史。

form

n. 形状，形式，外形，方式，表

例句
A household radiator absorbs energy in the form of electric current and releases it in the form of heat.
家用取暖器吸收电流能量，再以热量的形式释放出来。

or

conj. 或，或者，还是，不然，否则，左右；prep. <古、诗>在…之前，比…更早；n. [纹章]黑金色、黑色；

例句
We are scared to abandon ourselves to our feelings in case we seem weak or out of control.
我们不敢放纵自己的情感，以免显得太过软弱或缺乏自制。

as

adv. 同样地，一样地，例如；prep. 作为，以…的身份，如

例句
As far as I can recall, Patti was a Smith.
我记得帕蒂是姓史密斯的。

sustained

adj. 持久的，持续的；v. 维持( sustain的过去式和过去分词 )，支撑，忍受，长期保持；

例句
He sustained serious neck injuries after he broke someone's fall.
有人坠落压在他身上，致使他颈部受重伤。

release

vt. 释放，放开，发布，发

例句
Acupressure is used to release tension spots in the shoulders and neck.
指压按摩用于缓解肩部和颈部的紧张。

skin

n. 皮，皮肤，（蔬菜，水果等）外皮，毛皮；vt. 剥皮，削皮，擦破皮，擦伤，欺骗；vi. 使愈合，长皮；adj. <俚>色情的；

例句
My skin was abraded and very tender.
我擦破皮了，一碰就疼。

patch

n. 补丁，补片，眼罩，斑点，小块；vt. 修补，拼凑，暂时遮掩一下，修理，平息（吵架等），用美人斑装饰（脸）；vi. 打补丁；

例句
His finger went up to touch the black patch which covered his left eye...
他伸手去触摸遮住左眼的黑眼罩。