Translation guide
The primary group or element that drives an effort, movement, or military action.
Referring to the most important group of people that leads or constitutes the core of an organization, movement, or activity.
Referring to the most important factor or element that drives a result or change.
The main cause or primary factor behind a phenomenon.
They are the main force behind the project.
主力選手が怪我で欠場した。
The main player was out due to injury.
Literally 'central force', used for the core group within a larger movement or organization, often in political or social contexts.
その政党の中心勢力は若者だ。
The main force of that political party is young people.
Main body of troops; used specifically in military contexts to distinguish from advance or rear guards.
本隊は夜明けに到着する。
The main force will arrive at dawn.
失敗の主因は準備不足だ。
The main force behind the failure was lack of preparation.
Driving force or motive power; emphasizes the energy or motivation behind an action.
彼の情熱が成功の原動力だ。
His passion is the main force behind the success.