The start or beginning of something; the initial phase or the act of standing up/start-up (of activity).
新しいプロジェクトは立ち上がりが肝心だ。
The start-up phase is crucial for a new project.
パソコンの立ち上がりに時間がかかる。
The computer takes a long time to boot up.
イベントの立ち上がりで宣伝を集中させた。
We concentrated publicity at the start of the event.
In baseball, how well a pitcher performs at the start of the game; the quality of a pitcher's early innings.
今日の先発の立ち上がりは良く、序盤で大量得点を防いだ。
The starter had a good beginning today and prevented early big scores.
立ち上がりが安定すればチームの勝率も上がる。
If the pitcher's early performance stabilizes, the team's win rate will also improve.