but silent night had already made its way into german school books and into the catholic and protestant churches.
但此时《平安夜》已经进入了德国学校的课本,并且已开始在天主教和基督教教堂中传唱。
fear not, because even while travelers are heading home, nasa continues working with others in industry and academia on technologies that will create a more silent night (and day) around airports.