It is best not to do that, but when experimenting, these things can happen, and they can be difficult to clear up.
最好不要这样做，但在实验过程中，这些情况有可能发生，而且清除起来相当困难。
All of these actually difficult to clear the mathematical model and mathematical formulas are the only confirmed solvable.
所有这些实际上很难用明确的数学模型及数学公式给出唯一确定解的。
BACKGROUND: Traditional treatment for femoral head necrosis is debridement surgery. This surgery is difficult to clear the lesions completely and easy to damage the normal tissue.
背景：股骨头坏死的传统治疗方法首先要进行病灶清除，这个过程手术时间长，很难彻底清除病灶且容易损伤正常骨组织。
There is clear evidence that the most difficult feeling of all to interpret is bodily pain.
有明显证据表明，最难以描述的感受是来自于身体的伤痛。
In fact, it is difficult to see how journalists who do not have a clear grasp of the basic features of the Canadian Constitution can do a competent job on political stories.
事实上，如果记者对加拿大宪法的基本特征没有清晰的把握，他们很难胜任报道政治事件的工作。
It's difficult for teenagers who are generally lacking of experiences to have a clear vision for their future.
青少年一般缺乏经验，要他们对自己的未来有一个清晰的设想是很困难的。
It helps one to remain clear-headed and confident in difficult situations.
它帮助人在困难的情况下保持清醒和自信。
The most difficult parts of putting JAXP to work are changing a system property, setting validation through a factory instead of a parser or builder, and getting clear on what JAXP isn't.
要使JAXP 运行，最困难的部分是更改系统特性、通过工厂而非解析器或构建器来设置验证，和弄清楚 JAXP 不是什么。
It is difficult to give a clear idea of all the vague and mysterious happenings of that period, but this much is certain, that my exchange of garlands[2] with Poetic Fancy was already duly celebrated.
若是要给予那个神秘而快乐的时期一个确定的轮廓是困难的，但是有一点是确定的，就是我与诗歌爱好的婚约仪式已早已适时地被颂扬。
Furthermore, it is difficult to optimize the test script decomposition without a clear strategy in mind.
此外，如果在头脑中没有一个清晰的策略，是很难优化测试脚本分解的。
I made it clear to them, and I made it clear to you, that I was trying to make a judgment about what was reasonable in a difficult and unprecedented circumstance.
我对董事会成员明确说过，我也对诸位明确说过，即我将尽力在一个困难与史无前例的局面中对合理的事情作出判断。
Without a clear, "official" approval from senior management, the manager's new role will be more difficult to protect when difficulties arise.
没有一个来自上级管理层的明确的“正式的”批准，在出现困难时经理的新角色的保全就会困难重重。
While this can be difficult to align with established PM practices - there is a clear path to improved governance and risk management.
然而这跟已经建立的项目管理实践很难结合在一起——事实上是有一种明确的方法来优化组织和风险管理的。
It's difficult to say which company or platform will most successfully bring the mobile wallet to the masses but it's at least very clear that the days of plastic credit CARDS are numbered.
很难说，哪个公司或平台会最终成功地将手机钱包大众化。但是有一点可以肯定的是，使用塑料制信用卡的日子，屈指可数了。
However, it is not yet clear how the rule will be applied or how it will prevent some types of proprietary trading that are difficult to distinguish from market-making.
然而，至今为止仍然未明确该法则如何应用，或者如何阻止一些类型的自营交易，而把他们从作价市场中区分出来实非易事。
Making the proteins from scratch is more difficult, because their shape is crucial to their function, so it is not clear whether he will bother to do so.
从头开始造蛋白质更困难，因为其形状是其功能的关键，所以还未确定他是否会劳神去做。
They said it was not clear why louder music appeared to increase alcohol consumption but said it might make conversation more difficult, forcing people to drink more and talk less.
研究人员称，目前还不清楚为什么较响的音乐会促进顾客的饮酒量，但他们说这可能是因为在太吵的环境里交谈比较困难，所以客人们只能多喝酒少说话。
Analysts also warn that until the full extent of the damage caused to Japan's economy and businesses becomes clear, it will be difficult to predict how long the impact on other countries will last.
分析家也警告说到日本此次灾害对日本本国经贸的影响程度明朗以前，都很难预测出对灾害其它国家的影响会持续多久。
When companies make a gratis offer, what they're really doing is muddying the cost-benefit equation and making it more difficult for their prospects to make a clear value determination.
当公司发送免费品，他们真正的用意却只在搅浑成本-收益对等关系，让人更难人确认其价值。
Another thing we hear from PivotTable users all the time is that it is too difficult or slow to clear stuff off of a PivotTable.
我们从数据透视表用户那里经常听说的另外烦恼就是清除数据透视表中的数据太困难或是太慢。
Remember, however, that your partner may find it more difficult to express his or her feelings to you, so do not assume that everything is clear and out in the open, just because that is how you work.
然而需要提醒你的是，你的另一半可能会相对你而言更难于表达自己的感受，所以不要以为任何问题都是清晰而公开的，因为这只是你单方面能做到这一点。
It is extremely difficult to take clear pictures of the white and very shiny handle. Here are photos, but they do not show-case this fine cue properly.
想要给本杆中的白色闪耀握柄拍摄清晰照片是极其困难的。以下这些照片不足以展示这根球杆的精美。
However, it is rather difficult to build a distributed embedded system now, because there is not a fairly good and clear system model to direct the building process.
然而目前还没有一个良好、清晰的分布式嵌入系统模型为系统的构建提供指导，因此该类系统的构建是比较困难的。
The clear water bay the ripples it will be difficult to erase you my reflection, between heaven and earth can vaguely hear my conjugal bliss.
那一湾清水泛起的圈圈涟漪也难以将你我的倒影就此抹去，天地间隐约还能听见你我的琴瑟和鸣。
If you find talking about your concerns difficult, it may help to make notes to bring along to the work interview with you. Make these clear and specific.
如果你发现难以开口，也许通过写便笺来约定进行一次工作谈话会起到帮助。记住要把事情写清楚、具体。
Clear the air. This idiom comes from the fact that, when there is smoke or fog in the air, it is difficult to see.
消除误会。这个习语源于这样一个事实，当空气中烟雾弥漫时，是很难看到东西的。
You know to be a technical man who only need to take out those operations is easy, but to be a researcher who has a clear idea on what is going on is much more difficult.
大家都知道做一个只会操作实验步骤的技术工人容易，但是要想做一个对实验走向思路清晰的研究者就难得多。
You know to be a technical man who only need to take out those operations is easy, but to be a researcher who has a clear idea on what is going on is much more difficult.
大家都知道做一个只会操作实验步骤的技术工人容易，但是要想做一个对实验走向思路清晰的研究者就难得多。
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