exact

将“exact”分解为两部分记忆：“ex”可以联想到“extreme”，意味着非常，而“act”联想到“action”，表示行为或动作。想象有一个极端严格的人要求每一个动作都完美无缺，这就是“exact”的意思，即精确的、准确的。

exact 精确的

ex-, 向外。-act, 做，驱使，称量，词源同act, examine, exigent. 即称量的，精确要求的。

exact

exact: [15] The adjective exact ‘precise’ and the verb exact ‘demand with severity’ have undergone considerable semantic divergence over the centuries, but they both go back to the same source, the Latin verb exigere (from which English also got essay, examine, exigent [15], and exiguous [17]). This, a compound of the prefix ex- ‘out’ and agere ‘lead, drive’ (source of English act and agent), meant originally ‘drive out’, but in due course it developed the metaphorical senses ‘demand’ (preserved in the English verb), ‘weigh accurately’, and ‘bring to completion or perfection’.

These last two were taken up adjectivally in the Latin past participle exactus, from which English gets exact.
=> act, agent, essay, examine

exact (adj.)

"precise, rigorous, accurate," 1530s, from Latin exactus "precise, accurate, highly finished," past participle adjective from exigere "demand, require, enforce," literally "to drive or force out," also "finish, measure," from ex- "out" (see ex-) + agere "drive, lead, act" (see act (n.)).

exact (v.)

mid-15c., from Latin exactus, past participle of exigere "require, enforce, demand, collect (money);" see exact (adj.). Older in English than the adjective and retaining the literal sense of the Latin source. Related: Exacted; exacting.

1. The exact locations are being kept secret for reasons of security.

确切地点因为安全原因要保密。

2. A small number — five, to be exact—have been bad.

一小部分——确切地说是5个——已经坏了。

3. Charles scored again, with an exact duplicate of his first goal.

查尔斯再次得分,与第一次破门如出一辙.

4. Find the exact grip that allows you to hit the ball hard.

找到能让你大力击球的准确握拍方法。

5. It has taken until now to pin down its exact location.

直到现在才确定了它的准确位置。

【correct, accurate, exact, true, right, precise】
这组词都有“准确的，正确的”的意思，其区别是：
correct: 最常用词，主要指按一定标准或规则来衡量，没有谬误和差错或无缺点错误。
accurate: 指通过谨慎的努力达到符合事实或实际，侧重不同程度的准确性，与事实无出入。
exact: 着重在质与量方面的准确，语气比accurate强。
true: 暗指绝对准确，尤指复制品与原件丝毫不差。
right: 使用广泛，可与这些词中的correct换用，但常暗示道德、理解、行动等方面的正确。
precise: 侧重极端准确，更强调细节的精确无误。