If, for example, you write every day and practice the basics of grammar and language, you'll make them unconscious habits, and unconscious habits require less energy to act out.

例如，如果你每天写作，练习语法和语言的基础，你就会使它们变成无意识的习惯，而无意识的习惯需要更少的精力去付诸实践。

Yet in mechanics, whatever the mechanicians might think, both energies acted as interchangeable force on man, and by action on man all known force may be measured. Indeed, few men of science measured force in any other way.

然而在力学中，无论机械师怎么想，这两种能量都作为作用于人的可互换的力，并且通过作用于人的所​​有已知力都可以测量。事实上，很少有科学家以任何其他方式测量力。