beside oneself

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释义
极度兴奋；发狂
Overcome; consumed by an emotion.

例句
ISOBEL CRAWLEY：As you can imagine, Molesley's father is beside himself with joy.(Downton Abbey)
伊泽贝尔.克劳利：可以想象，莫斯利的父亲会喜出望外。(唐顿庄园）