The recommended normal upper limit for L/S ratio by WHO is 0 8 and L/S ratios of our patients were more than 0 8 with the av...是什么意思_The recommended normal upper limit for L/S ratio by WHO is 0 8 and L/S ratios of our patients were more than 0 8 with the av...在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句