多年来

• Pinyin: duō nián lái
• Desglose de hanzi: 多 = many; 年 = 禾 (grain/harvest) + 人 (person) — originally one harvest cycle = one year; 来 = 来 (to come) — up to the present

Significado

Desde hace muchos años; a lo largo de los años.

多年来 frames a statement within the context of accumulated time and experience. It often introduces achievements, changes, relationships, or sustained conditions: 多年来的努力 (years of effort), 多年来积累的经验 (experience accumulated over many years), 多年来坚持 (persisted for many years). Unlike 长期以来 (for a long time — more formal), 多年来 has a personal, reflective quality.

Ejemplos

1. 多年来，他默默资助贫困山区的孩子，从未向任何人提起过这件事。
2. 两国之间多年来建立起的互信基础，使此次合作得以顺利推进。
3. 多年来的科研积累终于在这一刻转化为重大突破，团队成员激动不已。

Guía de uso

Contexto: reflection, narrative, achievement, relationships, history

Tono: reflective

Correcto

• 多年来，这位科学家坚持在条件艰苦的野外进行生态调查，积累了大量珍贵的第一手数据。(For many years, this scientist has persisted in conducting ecological surveys in harsh field conditions, accumulating a wealth of invaluable first-hand data.)
• 多年来双方建立的战略合作关系，已成为推动两国经济共同发展的重要纽带。(The strategic cooperative relationship established between the two sides over many years has become an important bond driving the joint economic development of both countries.)

Incorrecto

• 多年来我明天要去北京 — 多年来 is a backward-looking temporal frame; it cannot precede future plans; say 明年 or 今后多年 for future-oriented statements

Origen e historia

多年 (many years) + 来 (coming up to the present) — spanning many years up to now

Contexto cultural

Generación: All ages

Contexto social: Universal