を握る

to hold or grip; figuratively, to hold the key to or control something

→ を
phrase Uncommon #14,962
to hold or grip; figuratively, to hold the key to or control something Often used literally for holding something in one’s hand, and figuratively for having influence or control.
JA: この問題の解決のカギを握るのは彼だ。
EN: He holds the key to solving this problem.

私の手を握る?

Will you hold my hand?

— ベルリン・天使の詩 (1987)

愛する誰かの手を握る感覚は?

What does it feel like to hold the hand of someone you love?

— ブレードランナー 2049 (2017)

トムはマイクを握ると人格が変わる。

Tom becomes a different person when he grabs the microphone.