例句與造句

1. The seas . they are in fact the solidified lava flows , which occurred after the formation of the lunar crust
   ，這種海滴水全無，只有在遠(yuǎn)古月球外殼形成時(shí)凝固了的熔巖。
2. Layers of carbonate limestones , silty mudstones , quartz sand and solidified lava show that within the past 600 million years , this area was a warm , shallow sea , then a muddy swamp , then a vast desert of shimmering hot dunes , then a glacial ice sheet , then a shallow sea once again
   層層的碳酸石灰?guī)r、粉砂質(zhì)泥巖、石英砂和凝固的熔巖，顯示在過去六億年間，這個(gè)區(qū)域曾經(jīng)是溫暖的淺海，接著依序變成泥濘的沼澤、擁有炙熱沙丘的廣闊沙漠，然后是冰川，后來又再度成為淺海。
3. It's difficult to find solidified lava in a sentence. 用solidified lava造句挺難的