1.
Difficult Characters in Ancient Manuscripts of Anals of Three Kingdoms Unearthed from Dun-Huang and Turpan
敦煌吐鲁番出土《三国志》古写本疑难字形四例
2.
On the difficult case caused by subject in criminal investigation;
从“侦查中主体”看疑难案件的形成
3.
Supplemental to the difficulty vulgar characters in Dunhuang MS fragment of Biography of Buzhi in History of the Three Kingdoms in Dunhuang Academy s collections;
敦煌研究院藏《三国志·步骘传》残卷疑难俗字补释
4.
Thinking Methods for Deciphering Difficult Words and Phrases in the Book of How to Make Muniuliuma by Zhu Geliang
《作木牛流马法》疑难字句破译与机构复原
5.
The Method of Automatic Recognition of Several Kotty ECG Waves
几种疑难心电波形的自动识别方法探讨
6.
The Solutions to the Difficulties of Transformed Reasoning;
变形推理疑难解惑——兼析逻辑与经验之差
7.
Something, such as illegible or undecipherable writing, that is felt to resemble a hieroglyph.
难辨别的书写，象是用象形文字写的
8.
The Clinical Application of Digital Subtraction Angiography in Difficult Gastrointestinal Hemorrhage;
数字减影血管造影对疑难消化道出血的临床应用价值
9.
a knotty problem, question, etc
难以解决的疑难、 问题等.
10.
A Study on Comprehensive Ability of Character Structure of Chinese Children with Reading Disability;
阅读困难儿童的字形结构理解能力研究
11.
The word "old" here is quite bothersome.It could describe science or it could just as well be describing a scientist.
这“老”字的位置非常为难，可以形容科学，也可以形容科学家。
12.
The doubt is more than I can bear.
这种疑心使我难以忍受。
13.
Now the snag in this sort of anecdote,
这类奇闻的疑难之处，
14.
a problem that is coming to a head;
迫在眉睫的疑难问题；
15.
Teir adoration interrogates.
他们的颂赞带着疑难。
16.
An invention that confounded the skeptics.
使怀疑论者难堪的发明
17.
Analysis of the Difficult Problems in Microsoft Word
Microsoft Word疑难问题解析
18.
allay trouble, fears, suffering, doubt, suspicion
减轻烦恼、 恐惧、 苦难、 疑惑、 嫌疑.