v hinder or prevent (the efforts, plans, or desires) of
v treat cruelly
s disappointingly unsuccessful
a. 失意的, 挫败的；泄气的
1. I felt frustrated when I couldn't solve the math problem.
当我无法解出那道数学题时，我感到很沮丧。
2. She was frustrated by the long wait at the doctor’s office.
她对在医生办公室漫长的等待感到沮丧。
3. He becomes frustrated when his computer crashes unexpectedly.
当他的电脑意外崩溃时，他会感到沮丧。