They have a registered membership of 1.3 million and a total stock of 2.4million books and 173 459 audio-visual items.是什么意思_They have a registered membership of 1.3 million and a total stock of 2.4million books and 173 459 audio-visual items.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句