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得由

must be ... by

→ 得
phrase Rare #23,768
must be ... by Indicates that a task or responsibility must be handled by the person or group that follows.
CH: 这件事得由你来决定。
EN: This matter must be decided by you.

但这罪得由你承担

But you’ll have to bear the blame for this.

— 守夜人 (2004)

这得由你们决定

That’s for you to decide.

— 摔跤吧！爸爸 (2016)

“这笔钱得由捕鱼来挣，不是靠店里。”

We have to earn this money from fishing, not from the shop.

“这件事得由你和你的法律顾问去处理。”

You and your legal counsel will have to handle this.