Chloral hydrate is a rapidly effective hypnotic.是什么意思？

Chloral hydrate is a rapidly effective hypnotic.

水合氯醛为一种作用迅速的催眠药.

chloral

n. 三氯乙醛，三氯乙二醇；

例句
Condensation of phenol and chloral over HY zeolite catalysts was studied in detail.
以三氯乙醛为亲电试剂,在HY沸石催化剂上实现了苯酚和三氯乙醛的二次缩合反应.

hydrate

n. 水合物；vt.& vi. （使）水合；

例句
After-sun products will cool and hydrate your skin.
晒后护肤品会清凉肌肤并为其补水。

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。

rapidly

adv. 很快地，迅速地，立即；

例句
He had discovered politics and was rapidly becoming absorbed by it...
他接触到了政治并且迅速地对它着了迷。

effective

adj. 有效的，起作用的，实际的，实在的，给人深刻印象；n. [军]现役兵额，有生力量，精兵；

例句
Light colours provide an effective backdrop for pictures or a mirror.
浅色是挂放图画或镜子很有效果的衬托。

hypnotic

adj. 催眠术的，易于催眠的；n. 安眠药，催眠状态的人；

例句
The hypnotic state actually lies somewhere between being awake and being asleep.
催眠状态实际上介乎清醒和睡眠之间。