如果你会在那儿保护他……西弗勒斯，你肯发誓么？你能立下牢不可破的誓言么？

If you are there to protect him... severus will you swear it? Will you make the unbreakable vow?

youdao

“牢不可破的誓言？”斯内普脸上的表情变得不可捉摸了，贝拉特里克斯发出一串得意的笑声。

Snape's expression was blank, unreadable. Bellatrix, however, let out a cackle of triumphant laughter.

youdao

这里，我将参考“牢不可破的誓言”和“冰霜圣诞节”中的内容来证明斯内普对邓不利多的忠诚。

Here I will reference some quotes from the chapter "the Unbreakable Vow" and "a Very Frosty Christmas" to examine them from the point of view that Snape is loyal to Dumbledore.

youdao