twilight band的意思|示意
                        
                          美 /  /
                          
                        
                          英 /  /
                          
                      
                      半阴影带
twilight band相关例句
But only some well-placed skygazers along a band through North America were able to catch this lunar occultation's final act in fading twilight.
只有掩星带上的北美观星人才能在夜幕降临前看到这一景象。