1·You are dealing with the physical remains that people left behind.
你面对的是古人留下的实物残骸。
2·They left behind their beds or basins as limestone formations that we can still see today.
它们留下了河床或盆地，形成了我们今天仍然可以看到的石灰岩地层。
3·During previous interglacial periods, when glaciers retreated, they left behind open land in their wakes.
在以往的间冰期中，当冰川消退时，它们在尾迹中留下了开阔的土地。
4·The grandmama's book was carefully packed, and the red shawl that Miss Rottenmeier had purposely left behind.
祖母的书包装得很仔细，还有罗特麦耶小姐故意留下的红色披肩。
5·Heavier isotopes tend to be left behind when water evaporates from the ocean surfaces, the remaining ocean water becomes progressively enriched in oxygen 18.
当水从海洋表面蒸发时，往往会留下较重的同位素，所以剩余的海水会逐渐富含氧18这种同位素。
1·He also uses it to scrape in the dirt for what the people who once lived there left behind.
他也用这把锄头去挖土，希望在那些曾经有人住过的地方能挖到一些遗留下来的东西。
2·Researchers can measure that change in the bubbles of ice left behind in ice cores in Greenland.
研究人员从格陵兰冰核中遗留的冰泡上能够测出这个变化。
3·The memory of a fun weekend still fresh in the mind, returning to all the problems left behind on Friday and the endless expanse of time until next weekend.
愉快的周末还记忆犹新，却要回到在周五遗留下来的所有问题和到下个周末之前无尽的时间中去。
4·But because they didn't meet the standards of No Child Left Behind, Ricci's school was labeled as failing last year.
但是由于他们没有满足没有小孩被遗留的水准要求，里奇学校在去年被标认为失败的。
5·TEPCO engineers say they are far from being in control of the damaged reactors and it could take months to stabilize them and years to clear up the toxic mess left behind.
公司工程师称，他们远远无法控制受损反应堆的事态，平稳事态可能需要数月，而清除遗留毒害物质恐需要数年。