第一线

• Pinyin: dì yī xiàn
• Hanzi breakdown: 第 = 竹 + 弟 (ordinal prefix); 一 = horizontal stroke (one); 线 = 糸 + 戋 (thread, line)

Meaning

The front line; the frontline. The forefront of a field, activity, or battle where the most direct and demanding work takes place.

Used to describe those working at the most direct or critical operational level — in medicine (frontline doctors), education (classroom teachers), or any professional context where 第一线人员 (frontline personnel) do the hands-on work. Carries connotations of dedication and direct engagement.

Examples

1. 在抗疫期间，无数医护人员奋战在救治病患的第一线，展现了无私奉献的精神。 During the pandemic, countless medical workers fought on the front lines treating patients, showing a spirit of selfless dedication.
2. 这位教授已退出科研第一线，转而专注于培养年轻一代的学者。 This professor has stepped away from the front lines of research and now focuses on mentoring the next generation of scholars.
3. 基层干部长期工作在服务群众的第一线，深知民间疾苦。 Grassroots officials work for years on the front lines serving the public and understand people’s hardships firsthand.

Usage Guide

Context: medicine, military, education, public service

Tone: respectful

Do Say

• 坚守在教育第一线的乡村教师，以其默默奉献诠释了教育的真正意义。(Rural teachers who persist on the frontline of education have interpreted the true meaning of education through their quiet dedication.)
• 第一线的工程技术人员每天直面生产中的实际问题，积累了宝贵的实践经验。(Frontline engineering and technical personnel face practical production problems every day, accumulating invaluable practical experience.)

Don't Say

• 第一线前线 — redundant; 第一线 and 前线 overlap in meaning; choose one depending on whether the context is civilian (第一线) or military (前线)

Origin & History

第一 (first) + 线 (line) — the first/front line

Cultural Context

Generation: All ages

Social background: Universal