这些障碍物对于想要往上游游动的鱼儿来说是致命的。The barriers are lethal to fish trying to swim upstream.他在那里有一栋房子，但在河上游几英里处。He has a house down there but it's miles up river.上游的城市将污水排放到河里。Cities upstream use the river to get rid of sewage....
目前, 有两种最普通的拓扑结构,分别称为环形网和总线形网.Today, the two most common topologies are called ring and bus networks.目的探讨胃线形溃疡的 X 线诊断、临床意义、检查方法.Objective To explore the clinical significance and X - ray diagnosis of linear ulcer.磁带: 线形的磁...
古埃及众神the ancient Egyptian pantheon古埃及人把天堂视为他们现实生活的理想形式。The ancient Egyptians saw paradise as an idealized version of their own lives.(古)埃及人以石工技艺见长.The Egyptians were expert in the working of stone....
The Tundra Times, a weekly newspaper in Alaska, ceased publication this week.阿拉斯加的周报《苔原时报》本周停刊了。Gold was the loadstone that drew men to Alaska.金子是具有吸引力的东西,它引诱人前往阿拉斯加州.They saw many seals off the Coast of Alaska.他们在阿拉斯加海岸...