基本解釋氣躰發(fā)射星雲(yún)英漢例句雙語例句Messier 27 (M27) is an excellent example of a gaseous emission nebula created as a sun-like star runs out of nuclear fuel in its core.Messier 27（M27）是個氣躰發(fā)射星雲(yún)的典型例子，它是由於類似太陽的恒星耗盡了其核心的核燃料而産生的。gaseous emission nebula更多例句