困难

Spontaneous rupture of esophagus also known as Boerhaave's syndrome, is an extremely severe thoracic disease with high mortality, and is difficult to diagnose because of its rarity and frequent confusion with other severe clinical conditions, such as acute myocardial infarction, perforated peptic ulcer and acute pancreatitis.

自发性食管破裂，又称Boerhaave综合征，是临床上一种严重的胸科急症，因临床少见且易与其他疾病，如急性心肌梗死、消化性溃疡穿孔、急性胰腺炎等混淆，临床诊断较困难，死亡率高。

Uses most early the ferric oxide sweetening agent for the bog ore and the artificial ferric oxide, for increases its factor of porosity, the sweetening agent take the sawdust as the stopping, again sprays the right amount water and the few white lime, sun-dries repeatedly makes, its PH value is generally about 8-9, this kind of sweetening agent desulphurization efficiency is low, must outside the tower regenerate, the regeneration difficulty, then is substituted for soon by other sweetening agents.

最早使用的氧化铁脱硫剂为沼铁矿和人工氧化铁，为增加其孔隙率，脱硫剂以木屑为填充料，再喷洒适量的水和少量熟石灰，反复翻晒制成，其PH值一般为8-9左右，该种脱硫剂脱硫效率较低，必须塔外再生，再生困难，不久便被其他脱硫剂所取代。

If he saw a trucker in difficulty, he would just bog in and give a hand.

如果他看到一个货运汽车司机有困难的话，他会非常热情地给予帮助。

Yet both Bogart and Bergman proved to be difficult participants in Casablanca .

然而，这两类鲍嘉和褒曼证明是困难的参与者在卡萨布兰卡。

Had proven according to this theory Urey has discovered the hydrogen isotope deuterium existence, however the Bohr theory's further development encounters the insurmountable difficulty, it is unable to process compared to the hydrogen atom slightly for the complex spot helium atom, also inextricability light spectral line intensity question and non-fetter system's question; The Bohr theory also is only the quantal concept and the classical theory mix, theoretically appears is not very harmonious.

根据此理论证明了尤里发现了氢的同位素氘的存在，然而玻尔理论的进一步发展遇到不可克服的困难，它无法处理比氢原子稍为复杂一点的氦原子，也无法解决光谱线的强度问题和非束缚体系的问题；玻尔理论还只是量子概念和经典理论的混合，理论上显得很不和谐。

"Prediction is very difficult, especially if it's about the future."- Niels Bohr Nobel laureate in Physics

"预测是非常困难的，尤其是对未来的预测"——Niels Bohr 诺贝尔物理学奖获得者

It's difficult work, but you must keep the pot boiling .

工作是困难的，可是你必须积极进行下去。

The location seemed a little daunting on paper, but once we were there it was no problem at all to find our way between Bola Bola and the tourist attractions.

那个地址在纸上看上去有些偏远，但是一旦我们到了那儿，我们发现想找到城区和旅游景点的路一点困难也没有。

Boland, chief credit officer for IBM Corporation, observes that It's sometimes difficult to get reliable credit information in the public domain in China, even for some of the larger firms.

Boland的看法是：有时，在中国，从公开领域中获取可靠的信用信息是很困难的，即使是一些大企业的。

You ought to face up to difficulties boldly.

你应该勇敢的正视困难。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了