国际气候制度的演进经历了艰难坎坷的历程。
The evolution of the international climate regime has undergone a long and arduous process.
本文拟通过坡短暂坎坷的生活经历、艰难曲折的写作生涯及其文学理论作品的探讨，以求揭开作家一生的死亡情结。
This essay is intended to discuss Poe's short and rough living experience, hard and tortuous writing career, his literary theoretical works, finally, his lifelong partiality for death.
安·阿赫玛托娃的一生，无论从普通女性的角度讲还是从诗人的角度讲，都极其坎坷艰难，甚至带有浓郁的悲剧色彩。
Anna Akhmatova, who is surveyed her whole life from the Angle of a common female or from the Angle of a poet, she suffers a lot, fulling of heavy tragic color.
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