The contribution of geothermal energy to the world's energy future is difficult to estimate.
地热能对世界未来能源的贡献是难以估计的。
It's difficult to estimate the number of youngsters involved in home schooling where children are not sent to school and receive their formal education from one or both parents.
很难估计有多少年轻人接受家庭教育，在家庭教育中孩子没有被送去学校，而是从父母一方或双方那里接受他们的正式教育。
He's a person difficult to estimate.
他是个难以捉摸的人。
He is a person difficult to estimate.
他是个难以捉摸的人。
It is difficult to estimate how long this will last.
很难估计这种情况将持续多久。
Moreover, it is very difficult to estimate bleeding risk.
而且很难去评估出血的风险。
but the true value of the services is difficult to estimate.;
但是服务的真正价值是很难估计的.
This is difficult to estimate especially for a highly dynamic system.
这是很难估计的，尤其是对于高度动态系统更是如此。
There are a few cases in which it is notthat difficult to estimate asset values.
有些情况下，评估资产价值是很容易的。
It is difficult to estimate or measure the importance of media in today's society.
估计或是衡量媒体在当今社会的重要性是很困难的。
It is difficult to estimate the number of people doing part-time jobs on the side.
要估计进行兼职工作的人的数量是很困难的。
Is also difficult to estimate the extent the scope of the problem, the number of users at risk.
目前也难估计，该问题的范围有多大，多少用户还处于危险中。
If you are unfamiliar with its internal design, the cost of updates can be difficult to estimate.
如果您对现有产品的内部设计并不熟悉，可能很难估计更新成本。
For the same reason, proliferation is very difficult to estimate once some cells have started to fuse.
出于同样的原因，扩散是很难估计一旦一些细胞开始融合。
It's difficult to estimate the borderline of these three qualities because they are blent together as one.
因为它们是混为一体的，所以我们很难准确区别三者之间界限。
She added that it's difficult to estimate Numbers of this unintended catch, or even how it impacts ocean health.
她还表示，要估量这些混获品的数量乃至混获对海洋环境的影响是件非常困难的事。
Among the three parameters, it is difficult to estimate K because of its difficulty to be measured directly.
三个参数中，以预测非饱和导水率最为困难，原因之一在于直接测定困难。
While the information is quite difficult to estimate since it is very subtle and the pulse duration is very short.
但由于这一信息非常微弱，且脉冲信号的持续时间很短，多普勒变化率的精确测量也十分困难。
However, they are notoriously difficult to estimate and quantify, almost all of them carry large estimation errors.
但是，它们却难以估计和量化，一般都带有误差项。
However, if the tracking window is too small, it can become difficult to estimate motion from one frame to the next.
然而，如果跟踪窗口太小，它可以变得很难估计的运动，从这一帧画面到下一个。
Unfortunately, it is difficult to estimate the amount of concurrency supported by a single dispatcher thread on this kind of system.
遗憾的是，难以评估这种系统中单个调度程序线程支持的并发数。
It is very complicated and difficult to estimate initial and promise costs in foreign loans. Usually, this is done by computer abroad.
国外贷款中的前端费和承诺费计算很复杂，手算十分困难，在国外均采用电子计算机计算。
During the new type ammunition and rocket system development, fewer sample data make it very difficult to estimate the development cost.
在新型弹箭系统的研制中，由于样本数据较少，给研制费用估计带来一定的困难。
These first-ever projects have many similarities with pure research projects, where it is very difficult to estimate and predict the outcome.
那些第一次的项目同纯粹的研究项目之间具有很多相似之处，它们非常难以评估和预测结果。
It is more difficult to estimate and separate LFM as a result of the appearance of multi-object and the applying of Multi-LFM radar wave signal.
从回波信号中进行多目标信号分离和提取始终是防撞雷达的一个关键技术难点。
The costs of any such meltdowns are difficult to estimate, but when all is said and done the latest one is bound to be judged one of the more expensive.
虽然那些危机的代价难以估计，总而言之最近的这一次银行业危机注定被是代价更昂贵的一次。
The costs of any such meltdowns are difficult to estimate, but when all is said and done the latest one is bound to be judged one of the more expensive.
虽然那些危机的代价难以估计，总而言之最近的这一次银行业危机注定被是代价更昂贵的一次。
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