運ばなければ

have to carry, must carry, have to transport

→ 運ぶ
運ば carry, transport + なけれ Negative conditional + ば Conditional (“if”)
verb Rare #42,896
have to carry, must carry, have to transport Part of the pattern 運ばなければならない, meaning “have to carry/transport.”
JA: この箱を運ばなければならない。
EN: I have to carry this box.
Conjugation of 運ぶ
Conditional
運べ運ばなければ

けれど、一方からもう一方へ金を移すには、私が海を越えて運ばなければならない。

But to transfer the money from one side to the other, I have to carry it across the sea.

私はこのジャガイモの袋はもちろん、りんごも全部運ばなければならない。

I have to carry all the apples, as well as this bag of potatoes.

彼は家から駅までたくさんの荷物を運ばなければならなかった。

He had to carry a lot of luggage from his house to the station.