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energy (n.)

1590年代, “表达力”, 来自法语 énergie (16世纪), 来自拉丁语晚期 energia, 来自希腊语 energeia “活动, 行动, 操作”, 来自 energos “活跃, 工作”, 来自 en “在” (见 en- (2) ). + ergon “工作, 即所做的事; 业务; 行动” (来自PIE根 *werg- “做” ).

被亚里士多德用在“实际, 现实, 存在” 的意义上(与“潜在” 相对), 但在晚期拉丁语中被误解, 之后被理解为“表达的力量”, 作为召唤现实的精神图景的力量. “力量” 在英语中更广泛的含义最早记载于1660年代. 科学上的使用是从1807年开始的. Energy crisis 首次被证明是1970年.

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Definitions of energy from WordNet
1
energy (n.)
(physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs;
energy can take a wide variety of forms
Synonyms: free energy
energy (n.)
forceful exertion;
he plays tennis with great energy
Synonyms: vigor / vigour / zip
energy (n.)
enterprising or ambitious drive;
Europeans often laugh at American energy
Synonyms: push / get-up-and-go
energy (n.)
an imaginative lively style (especially style of writing);
his writing conveys great energy
Synonyms: muscularity / vigor / vigour / vim
energy (n.)
a healthy capacity for vigorous activity;
jogging works off my excess energy
Synonyms: vim / vitality
energy (n.)
any source of usable power;
the DOE is responsible for maintaining the energy policy
2
Energy (n.)
the federal department responsible for maintaining a national energy policy of the United States; created in 1977;
Synonyms: Department of Energy / Energy Department / doe
From wordnet.princeton.edu