The excretion of the isotope in urine and faeces mainly occurred on the first day, and was 7.7% and 68.2% respectively of the administered dose.是什么意思_The excretion of the isotope in urine and faeces mainly occurred on the first day, and was 7.7% and 68.2% respectively of the administered dose.在线翻译_英语_读音_用法_例句