多くを

a lot; much, much of; most of

→ 多く
phrase Rare #30,750
a lot; much Used as an object for a large amount or many things.
JA: その会社は宣伝に多くを費やしている。
EN: That company spends a lot on advertising.

人はどんなに金持ちでも、必ずもっと多くを望む。

No matter how rich people are, they always want more.

君は彼に多くを期待できない。

You can't expect much from him.

phrase Rare #38,361
much of; most of Used to refer to a large part of a whole, with を marking it as the object of an action.
JA: 彼女は時間の多くを研究に費やした。
EN: She devoted much of her time to research.

ブラジルはわが国のコーヒーの多くを供給している。

Brazil supplies much of our country's coffee.

公共施設の多くを暴徒が破壊したので緊急災害警報を発令しました

We issued an emergency disaster alert because rioters had destroyed many public facilities.

— 新感染 ファイナル・エクスプレス (2016)

私は彼の小説の多くを翻訳で読んだ。

I read many of his novels in translation.

彼は人生の多くを海外で過ごした。

He spent much of his life abroad.