我知道，罗马不是一天建成的。我相信，经过不断的努力学习，有一天我可以说英语说的很好。
I know, Rome was not built in a day. I believe that after continuous hard study, one day I can speak English very well.
我知道，罗马不是一天建成的。我相信在持续不断的努力学习下，总有一天我英语讲得很好。
I know, Rome was not built in a day. I believe that after continuous hard study, one day I can speak English very well.
感觉像它可能已建成昨天，感觉很好，这是丰富多彩的，人们往往注意这一点。
It feels like it could have been built yesterday, it feels good, it is colorful, and people tend to pay attention to that.
新的水利设施在世界上的许多地方依然是必须的。已建成的设施也应该得到很好的维护以确保现有的功能。
New water facilities are still needed in many parts of the world, and the existing infrastructure must be maintained in order to keep the flow of benefits coming.
林道工程师早就知道如何估算运材道路的建筑费用，但在道路建成之前，却无法很好地预估道路建成之后的车辆运营费。
Forest engineers have long known how to estimate construction costs of a logging road, but operating costs of log trucks can not be well quantified before the road is built.
林道工程师早就知道如何估算运材道路的建筑费用，但在道路建成之前，却无法很好地预估道路建成之后的车辆运营费。
Forest engineers have long known how to estimate construction costs of a logging road, but operating costs of log trucks can not be well quantified before the road is built.
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