正如那首歌所唱的，二者你不能只取其一。

You can't have one without the other, as the song says.

《柯林斯英汉双解大词典》

如提供一张以上的相片，编辑将选取其一而不会事先知会展商。

If more than one photo is received, the editor reserves the right to select either one without prior notice.

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但二者只能取其一，公司决定从他俩之间挑一位来接任部门经理。

But they can only choose one, the company decided to pick one of them to succeed between department managers.

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