For public health specialists this can be difficult ground.
对公共卫生专业人员而言，这可能是一个困难的方面。
That job is maddeningly difficult for human beings on the ground.
这样的工作即使对身处其中的人也是非常困难的。
This will make it difficult for America to claim the moral high ground at Copenhagen.
这将使得美国很难要求在哥本哈根取得道德制高点。
The insufficient light coupled with the wet ground made driving difficult.
光线不足，加上地面潮湿，使得驾驶十分困难。
The bad light coupled with the wet ground made driving very difficult.
光线不足，加上地面潮湿，使得驾驶十分困难。
GROUND COVER: It is surprisingly difficult to find grass images at this Angle.
地被植物：要找到这个角度的草地图是相当困难的。
It's always difficult to go and face a lower division side on their own ground.
做客一些低级别球队的球场往往很难战胜他们。
The bad light, coupled with the wet ground, made play very difficult.
光线差，场地又潮湿，使比赛难以进行。
It's difficult to argue with her - she's constantly shifting her ground.
很难与她辩论，她总是变换论点。
The ground was so dry that it was difficult to see where the river had been previously.
土太干燥了，很难看出原先河水流经的地方。
It's a difficult problem and I should like to go over the ground again.
这个问题是很麻烦，我想再了解一下情况。
It's a difficult problem and I should like to go over the ground again.
这个问题是很麻烦，我想再了解一下情况。
应用推荐