Warning: Niacin may cause temporary flushing, tingling, skin reddening, and sensations of heat, especially if taken on an empty stomach.是什么意思_Warning: Niacin may cause temporary flushing, tingling, skin reddening, and sensations of heat, especially if taken on an empty stomach.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句