Backdrafts
n. 倒轉（回程）；反向氣流
??? 情景例句
It's been my experience that I agree that yours are of better quality.
根據我的經驗來看，你們的產品質量的確較好。
There were times of disappointment, anger, and humiliation, and there were also times of joy.
生活中有失望、生氣和屈辱的時候。
They have nothing to sell and require nothing from others.
他們既不出售任何東西，也不需要從別人那兒得到任何東西，