To rise to one's feet; to get up from sitting or lying down.
毎朝ベッドから立ち上がるのがつらい。
It's hard to get out of bed every morning.
電車の中でお年寄りが乗ってきたので、隣の若い人がすぐに立ち上がった。
An elderly person got on the train, so the young person next to them immediately stood up.
子供が転んでも、すぐに立ち上がった。
Even after falling, the child quickly got back up.
ライブ会場で曲のサビになると観客が一斉に立ち上がった。
When the chorus came on at the concert, the audience all stood up at once.
To recover; to regain strength or composure after a setback or illness.
長い入院の後、彼は徐々に体力を取り戻して立ち上がった。
After a long hospital stay, he gradually regained his strength and recovered.
会社は一時的に業績が落ち込んだが、新しい商品で立ち上がった。
The company temporarily suffered a downturn, but recovered with a new product.
失敗して落ち込んだが、友達の励ましで立ち上がった。
I was discouraged by failure, but with friends' encouragement I picked myself up.
To take action; to rise up (often against something); to begin doing something actively.
市民が汚職に抗議して立ち上がった。
Citizens rose up to protest the corruption.
彼は問題を見て見ぬふりをせず、自ら立ち上がって解決に取り組んだ。
He didn't turn a blind eye to the problem; he stepped up and worked to solve it.
若い世代が環境問題に立ち上がり、声を上げ始めた。
The younger generation has begun to stand up for environmental issues and raise their voices.
In sumo, to rise from a crouch and execute the initial charge (tachi-ai).
立ち合いで両力士が同時に立ち上がると、場内は一気に盛り上がった。
When both rikishi rose at the tachi-ai, the arena erupted with excitement.
To start up (a computer or system); to boot up.
パソコンの電源を入れると、数分でOSが立ち上がる。
When you turn on the PC, the OS boots up in a few minutes.
サーバーが夜間に自動で立ち上がるように設定した。
I set the server to automatically start up during the night.
To be established; to be set up; to come into existence (e.g., organizations, projects).
災害支援のためのボランティア団体が地域で立ち上がった。
A volunteer organization for disaster relief was set up in the community.
新しいプロジェクトチームが立ち上がり、調査を始めた。
A new project team was formed and began the investigation.
To rise (of steam, smoke, etc.); to billow up.
鍋から白い湯気が立ち上がっている。
White steam is rising from the pot.
朝もやの中から田んぼに霧が立ち上がってきた。
Mist rose from the rice fields in the morning haze.