Definition
To experience severe physical or mental suffering; to be in a state of extreme distress or torment.
痛苦不堪
He was on the rack while waiting for the exam results.
他在等待考試結果時感到極度煎熬。
When she found out that her project hadn't been approved, she felt on the rack.
當她發現自己的項目沒有被批准時，她感到極度痛苦。
She was on the rack during the process of making this tough decision.
她在做出這個艱難決定的過程中感到極度煎熬。