eye span短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 视幅 The subtle shades and shimmering features of the corona that engage the eye span a brightness range of over 10,000 to 1, making them notoriously difficult to capture in a single picture. 日冕层的外形以及不断地闪烁着光度,光度变化的对比可以高达10,000倍,因此很难用一张图就呈现它的风貌。 bbs.astron.ac.cn