While their parents passed 39)surreptitious notes to each other in class, modern teenagers use the short message service on their mobile phones to communicate with their friends.是什么意思_While their parents passed 39)surreptitious notes to each other in class, modern teenagers use the short message service on their mobile phones to communicate with their friends.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句