A new technology is being introduced: this is a plastic strip that will change color when peed upon. (This seems to me like a reasonable next step.是什么意思_A new technology is being introduced: this is a plastic strip that will change color when peed upon. (This seems to me like a reasonable next step.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句