If the Black Rainstorm signal is hoisted any time during class time or within the room reservation period, then all the classes should remain unchange.是什么意思_If the Black Rainstorm signal is hoisted any time during class time or within the room reservation period, then all the classes should remain unchange.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句