But as a new kind of breathalyser, more selective and sensitive than anyexisting device, it promises to become a fast, cheap screening tool.是什么意思_But as a new kind of breathalyser, more selective and sensitive than anyexisting device, it promises to become a fast, cheap screening tool.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句