What does "build up" mean?

To increase strength gradually To develop physical or mental strength over time.

How do you use "build up" in a sentence?

You need to build up your strength. He built up his stamina. Build up slowly after injury.

Phrasal Verb BritishAmericanAustralian ★★★★★ Very Common Neutral

Meaning: To increase strength gradually

逐渐增强（体力）

Fortalecer gradualmente

（体力を）徐々につける

（체력을） 서서히 기르다

To develop physical or mental strength over time.

随着时间发展体力或精神力量。

Desarrollar fuerza física o mental con el tiempo.

時間をかけて体力や精神力を発達させる。

시간을 들여 신체적 또는 정신적 힘을 키우는 것.

Base verb: build

Particle: up

Separable: Yes — the object can go between the verb and particle

You need to build up your strength.
你需要增强体力
Tienes que ir ganando fuerza
体力をつける必要がある
체력을 길러야 한다
He built up his stamina.
他增强了耐力
Fue ganando resistencia
彼はスタミナをつけた
그는 지구력을 길렀다
Build up slowly after injury.
受伤后要慢慢恢复
Recuperad la fuerza poco a poco tras la lesión
怪我の後はゆっくり体力を回復して
부상 후에는 천천히 체력을 회복해라

Context: recovery, fitness

Tone: encouraging

From building layer by layer.

Era: Modern

Generation: All ages

Social background: Universal