The study inoled 429 children with persistent middle-ear effusions who were randomized to undergo prompt or delayed tympanostomy tube insertion.是什么意思_The study inoled 429 children with persistent middle-ear effusions who were randomized to undergo prompt or delayed tympanostomy tube insertion.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句