You know I'm lousy at Occlumency, I never got the hang of it.
你知道我大脑封闭术练得多差，一直找不到诀窍。
2
She tells Ron to go check on Harry after his first Occlumency lesson (476-478).
她让罗恩下了他的第一节occlumency课后去看看哈利(476 - 478)。
3
Occlumency is a necessary prerequisite to defeat a Legilimens' lie-detector abilities without suspicious behaviour such as avoiding face-to-face contact and eye contact.