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VERB
崩潰；失敗
If something such as a plan or system unravels, it breaks up or begins to fail.
例句
His government began to unravel because of a banking scandal...
他的政府由于一起金融丑聞而開始瓦解。
When she returned to America, the marriage unravelled.
她回到美國的時候，婚姻破裂了。
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V-ERG
解開；拆散；（使）松開
If you unravel something that is knotted, woven, or knitted, or if it unravels, it becomes one straight piece again or separates into its different threads.
例句
He was good with his hands and could unravel a knot or untangle yarn that others wouldn't even attempt...
他的手很靈巧，其他人甚至都不敢嘗試的一些難解的繩結或纏在一起的紗線，他都能解開。
The stairway carpet is so frayed it threatens to unravel.
鋪在樓梯上的地毯磨損得很厲害，都快散了。
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V-ERG
揭開；揭示
If you unravel a mystery or puzzle, or if it unravels, it gradually becomes clearer and you can work out the answer to it.
例句
A young mother has flown to Iceland to unravel the mystery of her husband's disappearance...
一位年輕的母親飛抵冰島，要揭開她丈夫失蹤之謎。
Gradually, with an intelligent use of flashbacks, Yves' story unravels.
通過巧妙運用倒敘手法，伊夫的故事慢慢呈現出來。