有困难的

Lesions of the small bowel are usually difficult to diagnose by conventional methods of investigation. Endoscopic examination also has its limitations. On the other hand, double contrast enteroclysis is regarded as the most satisfactory method of diagnosing small bowel diseases; it is more accurate than the barium follow through.

小肠病变以传统的检查方法不易诊断，内视镜对於全部小肠的检查也有困难，而小肠灌流双重造影术是目前检查小肠疾病较为理想的方法，比口服钡剂法有更高的准确性。

Freewoman 写道:History teaches us that every problem has a lifespan.

历史告诉我们，每一个困难都有它的尽头。

If you habe any trouble let me know.

如果你有任何的困难，请让我知道。

CT is still of high accuracy in diagnosis and differentiate diagnosis of thyroid adenoma and multinodular goiter,although it hardly differentiated in few of cases.

CT在甲状腺腺瘤与结节性甲状腺肿的诊断和鉴别诊断上具有较高准确性，但极少数鉴别仍有困难。

Many players have difficulty with the backhand simply because they tend to overhit with it and try to do too much, wishing they had two forehands.

很多网球爱好者感觉反手击球很困难的真正原因是因为他们击球时倾向于发大力发全力，希望他们有两个正手来击球！

To go in for reforms, one must have e fearless spirit of a pathbreaker.

搞改革 就要有一股不怕困难的闯劲。

To go in for technical innovation, one must have the fearless spirit of a pathbreaker

搞技术革新就要有一股不怕困难的闯劲。

To go in for reforms, one must have the fearless spirit of a pathbreaker.

搞改革就要有一股不怕困难的闯劲。

Nowadays, bone defect has become one of the most important disease which threat people's living quality severely. Today, the most common methods used to healing bone defects include: Autogenous bone grafts and allogenic bone grafts. But autogenous bone grafts have a shortage on donor, difficult to make shape and will bring a complicate disease on donor site; allogenic bone grafts often follow with graft rejective reaction, and have a potential risk of propagation of many disease.

目前，主要应用于临床骨缺损修复的方法有自体骨移植和异体骨移植等，但自体骨移植存在材料来源有限、供骨部位的损伤以及塑形困难等问题；异体骨移植也有潜在的疾病传播隐患以及移植排斥反应等严重后果，因此无论自体骨移植还是异体骨移植均无法完全满足需求，临床急需寻找一种安全有效的骨移植替代材料。

And elevator machine room has a different speed limiter calibration are: roomless elevator shafts of the speed limiter is located at the top, and its space-site calibration, verification conditions, operation more difficult, so No machine room elevator overspeed governor check the site work in the province and even across the country are rarely carried out.

和电梯机房有不同的限速校准是：对限速器无机房电梯井位于首位，其空间现场校准，核查情况，经营更加困难，因此没有机房电梯限速器检查现场工作在全省乃至全国都少见。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。