Cancellation of flights is a drastic remedy of those coping methods.It can weaken the delay propagation to some extent.The weakened degree is related to the number of flights cancelled.是什么意思_Cancellation of flights is a drastic remedy of those coping methods.It can weaken the delay propagation to some extent.The weakened degree is related to the number of flights cancelled.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句