讨厌的、且常为未料到的行动

1. 突然的挫折：a kick in one's gallop 异想天开 | a kick in the teeth 突然的挫折 | a king's ransom 一笔巨款

2. 忽然的挫折：a kick in one's gallop 异想天开 | a kick in the teeth 忽然的挫折 | a king's ransom 一笔巨款