"know from memory" in Chinese (Traditional)

• 背下來
• 記住（不看資料）

Definition

在不用參考資料的情況下準確地記得或復述，因為你已經背下來了。

Usage Notes (Chinese (Traditional))

略為正式，適用於數字、詩歌、清單等情境，比“記住”更強調已背熟的狀態。常用“背下來”或“背誦”。

Examples

I know from memory all my friends' birthdays.

我**背下來**了所有朋友的生日。

She can know from memory hundreds of phone numbers.

她可以**背下來**上百個電話號碼。

Do you know from memory the national anthem?

你**背下來**國歌了嗎？

He rattled off the list as if he knew from memory every name.

他像是把每個名字都**背下來了**似的，一口氣念出了名單。

After practicing, I could know from memory my part in the play without any mistakes.

練習之後，我能完全**背下來**自己在劇中的台詞，毫無差錯。

If you really know from memory these facts, you won't need your notes during the test.

如果你真的**背下來**這些內容，考試時就不需要看筆記了。