But hwo has got a firmer grip on reality: the glass-half-full optimist or the cold-eyed pessimist who focuses on obstacles ahead?是什么意思_But hwo has got a firmer grip on reality: the glass-half-full optimist or the cold-eyed pessimist who focuses on obstacles ahead?在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句