a cause of great trouble or suffering
苦恼的缘由,烦心事
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the tribulations of being a megastar. 身为演艺巨星的烦心事。
[mass noun]a state of great trouble or suffering
苦难,艰难,磨难
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his time of tribulation was just beginning. 他的苦日子才刚开头。
"Middle English: via Old French from ecclesiastical Latin