让我们走进非同一般的霍顿兄弟(Horten brothers)，他们曾致力于一件这样的武器。

Enter the unconventional Horten brothers, who were at work on one such weapon.

youdao

我兄弟曾送给教授一个玩具。

My brother once gave the Professor a toy.

youdao

还记得你妈妈曾逼你跟自己的兄弟姐妹道歉吗？

Remember when your mom used to have to force you to apologize to your siblings?

youdao

甲：你见过我兄弟吗？乙：我不记得曾见过他。

Ai Have you met my brother? B: Not that I remember.

youdao

甲：你见过我兄弟吗？乙：我不记得曾见过他。

Ai Have you met my brother? B: Not that I remember.

youdao