困难地

It has been specially compiled to help foreign learners master the writing of Chinese characters.

目的在于帮助学生较快地掌握汉字，克服学习汉语的一大困难。

Cavitation is the most distinct characteristic of the high-power low-frequency ultrasonic fields, and it is also regarded as the primary mechanism of ultrasonic cleaning. Nevertheless, the measurement question of the high-power low-frequency ultrasonic fields hasn't been resolved well, because of the incomplete cavitation theory and the complexity of cavitation fields. The universal acceptant standard measurement hasn't been found up to the present so that it is difficult to judge of the performance of ultrasonic cleaning machines scientifically.

大功率低频超声场最鲜明的特点就是空化，而空化也被认为是超声清洗的主要物理机制，但由于其理论研究尚不完善，加之空化声场的复杂性，使得至今大功率低频超声场的测量未得到很好的解决，尚未找到一种与清洗效果有确定关系的普遍适用的标准方法，使得在客观地评判清洗机优劣时很困难。

The selective deposition of agrin in hepatocellular carcinoma microvessels versus sinusoidal walls prompted us to investigate the utility of agrin immunohistochemistry in detecting malignant hepatocellular lesions.

Agrin选择性地沉积在肝细胞肝癌的微血管而非肝窦壁，此特点就促使我们研究应用agrin免疫组化来诊断肝细胞恶性病变的效用问题，着重于肝细胞腺癌和异型性结节，因为这两者的鉴别诊断常常很困难。

He said this was the whole truth of the matter, and he would take his oath of it;and concluded with very passionately begging Mr. Allworthy to have compassion on t he poor fellow's family, especially as he himself only had been guilty, and the other had been very difficulty prevailed7 on to do what he did.

他说，这就是事情的全部真相，并且，他可以为此立誓；他最后非常激动地恳求奥沃希先生对那个可怜人的一家网开一面，尤其是因为，有罪过的只是他自己，而其他人在劝阻他不要那么做上是存在很大困难的。

First and foremost, it is the sound—"a call of nature, an atavistic summons"—directly descended from the clamour that brought down the walls of Jericho. Then there is the astonishing difficulty of consistently hitting the right notes, let alone making music.

首先，它的声音独特，是直接源自于让耶利哥之墙倒塌的喧闹声，是&大自然的呼唤，先祖的召唤&；其次是要想连贯地敲乐器上的正确按键是出奇的困难，更不用说要奏响音乐了。

Because of unconvenient transportation, sparsepopulation, difficulty in developing, it remained poor and backword.

但由于交通不便、人口稀少、开发困难，一直是贫穷落后之地。

If I come out last-I hope this will notbe the case-but if I come out last, I will not call my attempt afailure, but will also celebrate it as a truesuccess, because part of my goal is my owncharacter training-to do more assertive, to bebrave in face of difficulties.

如果，我是最后一名—我希望情况不是这样—但如果我真的是最后一名，我也不会认为这次的尝试是一次失败，反而我要把它当作一次真正的成功来庆贺，因为我一部分的目标是对自己性格的锻炼—更加坚强、勇敢地面对困难。

Now, maybe it's not so fine today, but when we face everything breezily, we must feel relaxed and have an easy life.

当我们把困难和失败当作吃饭、睡觉甚至像我们的呼吸一样司空见惯，我们一定能充满激情地面对生活的洞口。

After conquering some difficulties, Maggie finally succeeded in rappelling down a cliffy mountain.

在克服了一些困难之后，麦琪终于成功地跳下了一座陡峭的山崖。

The sizes of the exposure before sigmoid sinus, below temporal lobe and the angles of exposure to the clival pit were measured.

位于岩斜区的各种病变由于手术暴露极为困难，长期以来一直是神经外科领域的&地雷区&。

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。