Severe disappointment or set-back

• (极大的)失望； 挫折

Severe disappointment or set-back的用法和样例：

例句

1. She concealed her disappointment from her mother.
   她对母亲隐瞒了自己的失望。
2. He tried to mask his disappointment with a smile.
   他试图以微笑来掩饰他的失望。
3. She crowed over his disappointment.
   她因他受了挫折而幸灾乐祸。
4. All their efforts at reform have been set back.
   他们所有的改革努力都遭受到挫折。