Present status and problems of floor drain in China was introduced.The security problem of floor drain was emphasized through a case study of SARS spread in Amoy Garden of Hongkong last year.是什么意思_Present status and problems of floor drain in China was introduced.The security problem of floor drain was emphasized through a case study of SARS spread in Amoy Garden of Hongkong last year.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句