1.
The Discussion on Questions in Quantum Electrodynimics
关于量子电动力学中若干问题的讨论(4)—高级近似·‘发散困难’及其物理意义
2.
Aesthetic Dilemma--New Discussion on Wang Zengqi s Essay;
审美的两难困境——汪曾祺散文新论
3.
I have a lot of trouble with pronunciation.
我在发音上有很多困难。
4.
She found it very hard to break the cigarette habit.
她发现戒烟很困难。
5.
The difficulty of the examination staggered him.
考试的困难使他很发愁。
6.
a recurrent problem [difficulty]
反复地发生的问题[困难]
7.
She had difficulty learning English pronunciation.
她学习英语发音有困难.
8.
I find it difficult to learn a foreign language.
我发现学外语是困难的。
9.
We did not notice any open rhinolalia, dysphagia and dysphonia.
未发现任何开放性鼻音、吞咽困难和发音困难。
10.
Difficulty in speaking, usually evidenced by hoarseness.
发音困难说话表达困难，常带有沙哑症状
11.
uncountable difficulties
无数的难题[困难]
12.
Do not worry about something before it has happened.
未到桥头莫急过；在困难出现之前不要为困难发愁。
13.
The usual symptoms are dyspnea, and sometimes paroxysmal nocturnal dyspnea.
其常见症状是呼吸困难，有时呈阵发性夜间呼吸困难。
14.
financial distress
财政困难,资金困难
15.
He found it difficult to know Clutton any better.
他发现了解克拉顿是很困难的。
16.
Is that guy on the level? I find it hard to believe him.
那家伙诚实吗?我发现要相信他很困难。
17.
The motor turned over without any trouble.
马达毫无困难地发动起来。
18.
After I've been ill, I find it hard to get going again.
生病后，我发现再开始有些困难。