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labour movement; labor movement
彼は労働運動の歴史を学んだ。
He studied the history of the labor movement.
組合は安全のため労働運動を続けた。
The union continued the labor movement for safety.
20世紀初頭、その地域では労働運動が盛んだった。
In the early 20th century, the labor movement was thriving in that region.