The lake was ponded by lavas a long time ago.这条湖是很久以前熔岩堵塞河道形成的.Such lavas also once came from the volcanoes in the Cascade Range in Washington.在华盛顿州的喀斯喀特山脉的火山也喷出过这样的熔岩.Previously, researchers had found nearby pillow lava...
The museum has a fine collection of medieval ivories.该博物馆收藏着一批精美的中世纪象牙制品.She is tearing up the ivories in heaven, I am sure.她正在天堂里大弹特弹着钢琴呢, 我敢肯定.He bought many ivories in the market.他在市场上买了许多象牙....