feed-back

柯林斯词典

1. N-UNCOUNT If you get feedback on your work or progress, someone tells you how well or badly you are doing, and how you could improve. If you get good feedback you have worked or performed well. 反馈
Continue to ask for feedback on your work. 继续征求对你工作的反馈。
2. N-UNCOUNT Feedback is the unpleasant high-pitched sound produced by a piece of electrical equipment when part of the signal that comes out goes back into it. (电子信号产生的) 尖厉噪声
The microphone screeched with feedback. 麦克风发出了尖厉的噪声。