The increased cost of chelate was only 0.5% of diet. Its input/output ratio was very high, come to 1:19.是什么意思_The increased cost of chelate was only 0.5% of diet. Its input/output ratio was very high, come to 1:19.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句