Qitianling granite is a post - collisional , deep - sourced and hypabyssal, early Yanshanian high - K calc - alkaline granite complex pluton.骑田岭花岗岩是燕山早期深源浅成的高钾钙碱性复式花岗岩岩体....
...the skills you will use to paddle the canoe.划独木舟要用到的技术The explorers paddled their canoe cautiously upstream.探险者们谨慎地把独木舟向上游划去.A canoe made by hollowing out a tree trunk; a dugout.独木舟将树干中心挖空制成的独木舟; 独木舟.He paddled the ca...