明了的英文：
palpability
perspicuity

参考例句：

He invented a two-way recorder.
他发明了两用收录机。

The explanation in the footnote - fied the difficult sentence.
注脚的解释使这一难句容易明了。

He invented a new type of stethoscope.
他发明了一种新型听诊器。

The spreading disease infected eyes, and she became blind.
疾病扩散影响到双眼，她失明了。

He invented a machine that helped teach new pilots to fly.
他发明了一种帮助训练新飞行员的机器。

He was clear and distinct in every corroborative circumstance
他对于每一点有关的情节都讲得很清楚，很明了。

No one person can take credit for the invention of writing.
没有一个人可以说是他单独发明了写字。

This just shows how divorced from reality she's become.
这恰恰说明了她变得多么不切实际。

It was symptomatic of the prevalent mood of hesitation
这典型地表明了普遍存在的那种犹疑不决的情绪。

Alexander Graham Bell invented the telephone in 1876.
一八七六年阿历山大·格雷厄姆·贝尔发明了电话。

palpability是什么意思：
n. 可触知性,明白,明了

There is an almost palpable feeling of hopelessness.
几乎明显有种无望的感觉。

The advantages Mr. Falkland possessed . . . are palpable
福克兰德先生所具有的优势.是显而易见的

The tension between Amy and Jim is palpable.
埃米和吉姆之间明显关系紧张。

a barely palpable dust; felt sudden anger in a palpable wave; the air was warm and close--palpable as cotton.
几乎无法察觉的尘埃；感觉到愤怒的暴发；温暖的空气就象可被触知的棉花。

None of the vessels and nerves of the hand is visible or palpable.
手的血管和神经不能看到或摸到。

perspicuity是什么意思：
n. 明晰,明了,简明

his program has perspicuous interface and extensive application.
该程序界面明了，适用范围广。

The most perspicuous physical characteristic of the porosity of a soil or rock matrix is its continuity
岩土格架的孔隙率的最清晰的物理特性是它的连续性。

He was at pains to insist on the perspicuity of what he wrote(Lionel Trilling)
他努力坚持作品的清楚明晰(赖恩内尔·特里林)