效力

• ピンイン: xiào lì
• 漢字の分解: 效 = 交 + 攴 (cross + action — effect/to follow); 力 = pictograph of a flexed arm — force/power

意味

効力（効き目）；（〜に）尽くす

As a noun, 效力 refers to the degree to which something achieves its intended effect — commonly used in legal, medical, and scientific contexts (e.g. 法律效力 = legal force). As a verb, it means to dedicate one's efforts to a person, organisation, or cause, often with a sense of loyalty.

例文

1. 这份合同自双方签字之日起正式生效，具有完全的法律效力，任何一方不得单方面撤销。
2. 这位学者曾长期效力于多所国际顶尖研究机构，为推动该领域的学术进步作出了卓越贡献。
3. 新药的临床试验数据显示，其在治疗该疾病方面的效力远超现有的标准疗法。

使い方ガイド

場面: law, medicine, science, professional service, military

トーン: neutral

正しい言い方

• 根据国际法，该条约在缔约国之间具有直接适用的法律效力，各方均有义务遵守其条款规定。(Under international law, the treaty has directly applicable legal force between the signatory states — all parties are obligated to comply with its provisions.)
• 他退役后选择以另一种方式继续效力于国家，投身科学研究，为国防技术的发展贡献力量。(After retiring from active duty, he chose to continue serving the nation in a different capacity — devoting himself to scientific research in support of national defence technology development.)

避ける言い方

• 这个药效力很强 — while grammatically possible, 效力 as a standalone noun is more natural in formal writing; in casual speech, use 效果好 or 药效强 instead

起源と歴史

效 (effect/to serve) + 力 (force/power) — the force of an effect; to devote one's strength to a cause

文化的背景

世代: All ages

社会的背景: Universal