Arsenic has a close relation with thallium in thallium-bearing mineral, and sulfur, especially organic sulfur, is an important factor.是什么意思_Arsenic has a close relation with thallium in thallium-bearing mineral, and sulfur, especially organic sulfur, is an important factor.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句