exact

accurate, exact, precise, right, true, correct

动词 exact:

1. claim as due or just
   同义词：demand
2. take as an undesirable consequence of some event or state of affairs
   同义词：claim, take

形容词 exact:

1. marked by strict and particular and complete accordance with fact
2. (of ideas, images, representations, expressions) characterized by perfect conformity to fact or truth ; strictly correct
   同义词：accurate, precise

1. Tell me (the exact time) when the next train will arrive.
   告诉我下一班火车抵达的正确时刻。
2. I don't know the exact date.
   我不知道确切的日子。
3. I finally managed to exact a promise from them.
   我最终迫使他们做出了保证。
4. I don't know the exact terms of the contract.
   我不知道合同的正确条款。
5. What is the exact size of the room?
   这个房间的确切面积是多少？

ex.act

adj.（形容词）
Strictly and completely in accord with fact; not deviating from truth or reality:
准确的，确切的：严格并完全地按照事实的；与真理或现实毫无偏离的：
例句：
an exact account; an exact replica; your exact words.
准确真实的报道；与原物一模一样的复制品；你的准确用词

Characterized by accurate measurements or inferences with small margins of error; not approximate:
精确的，精密的：以精确测量或精密推论为特征的，只有极小的误差；不是大约的：
例句：
an exact figure; an exact science.
精确的数字；一门严密的学科

Characterized by strict adherence to standards or rules:
严格的，严厉的：以严格坚持标准或原则为特征：
例句：
an exact speaker.
一个严谨的演讲者

v.tr.（及物动词）
ex.act.ed,ex.act.ing,ex.acts
To force the payment or yielding of; extort:
索取，勒索：强迫…付款或让步；强求：
例句：
exact tribute from a conquered people.
从一被征服民族强索供品

To demand and obtain by or as if by force or authority:
强求：通过或似乎通过武力或权威要求或获得：
例句：
a harsh leader who exacts obedience.See Synonyms at demand
一个强迫服从的严厉领导者参见 demand

来源：
Latin ex3ctus [past participle of] exigere [to weigh out, demand]
拉丁语 ex3ctus [] exigere的过去分词 [称出，要求]
ex- [ex-]
ex- [全部，超过]
agere [to weigh] * see ag-
agere [称] *参见 ag-

【引伸】
exact.able
adj.（形容词）
exact.ness
n.（名词）
exac.tor 或
exact.er
n.（名词）