入れば

enter, go in

→ 入る
入れ enter, go in + Conditional (if/when)
verb · conditional Rare #27,700
enter, go in
JA: 部屋に入れば、すぐ右に受付があります。
EN: If you enter the room, the reception desk is immediately on the right.
Conjugation of 入る

洞窟まで奴ら一度入ればもう出られない

Once those guys enter the cave, they’ll never be able to get out.

— ロード・オブ・ザ・リング/王の帰還 (2003)

見物料入れば

If admission fees are collected

— 道 (1954)

全然入れば?

Will it even fit?

— Hoje Eu Quero Voltar Sozinho (2014)

入れば知恵出ていく

When the booze goes in, the brains go out.

両方手に入ればもっとラクに終わっただろう

If we’d gotten both, it would’ve been much easier to finish.

— エリート・スクワッド (2007)

と思う入ればいいんだ

So I should think of it that way, right?

— ブゴニア (2025)

ワイン風呂に入れば立派なになれるのよ

If you take a wine bath, you'll become a real man.

— 8 1/2 (1963)