side wall first lining method wall in advance of arched roof tunneling method
Related Translations:
拱: Ⅰ动词1.(两手相合,臂的前部上举) cup one hand in the other before the chest 短语和例子拱别 take leave by saluting with both hands folded and raised in front2.(环绕) encircle; surround 短语和例子四山环拱的大湖 a great lake s
