Um, she hated school so she skived off a lot.

嗯，她讨厌学校，所以她经常逃学。

" If Snape's teaching Defense Against the Dark Arts again, I'm skiving off, "

“如果斯内普再来上黑魔法防御术课，我就请病假。”

Yes, in British English we usually say 'skive' or 'skive off' or 'bunk off'

是的，在英式英语中，我们通常说“skive”或者“skive off”或者“bunk off”。

Skiving? It means they're bunking their lesson.

溜号？就是说他们都逃课了。

For example, Don't tell mum I skived off school.

例如，不要告诉妈妈我逃学了。

" Hogwarts prefects surely don't wish to skive off lessons? "

“霍格沃茨的级长总不会想要逃课吧？”

" You can't skive off Divination, " said Hermione severely.

“你不能逃占卜课。”赫敏正色说。

Skiving is when you don't go to school or work when you should.

skiving 就是你本应该去上学或工作却没去。

" I'll give you undercover! " cried Mrs Figg, " Dementors, you useless, skiving sneak thief! "

“去你的不暴露身份！”费格太太嚷道，“摄魂怪，你这个逃避责任的没用的大骗子！”

For example, he says he's too ill to come to work, but I think he's skiving.

例如，他说他病得不能来上班，但我认为他是在偷懒。