We should adjust good face and use good exam skills. Grasp the examination method that first easy then difficult. Take basic points, and win a high score.

我们要调整好临场心态，运用好考试技巧，掌握先易后难，先熟后生的考试方法。拿足基本分，争取得高分。

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Once the human becomes addicted after smoking is very then difficult to swear off, because in tobacco's Nicotine widely regards as narcotics, it plays the stimulation to the central nervous system.

人一旦对吸烟上瘾后便很难戒掉，因为烟草中的尼古丁被广泛视为毒品，它对中枢神经系统起刺激作用。

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It wasn't difficult then to cross the frontier.

那时候穿越国界并不难。

《柯林斯英汉双解大词典》

If using your voice is difficult, then you know what dysphonia is.

VOA: special.2009.09.02

I'm not going to have you work long hours on difficult problems to be submitted and then graded.

我的作业不会让你们花费大量的时间,去钻研很难的问题，然后交上来让我打分。

麻省理工公开课 - 固态化学导论课程节选

Now if I am difficult with the user positive1 and I compile make positive1, and I then run positive1.

现在如果我和用户有点不和谐,我编译正positive1，然后运行。

哈佛公开课 - 计算机科学课程节选

It suggests that once a complicated mechanism involving a lot of different proteins has evolved, it is then difficult to change one bit without upsetting the rest.

ECONOMIST: The first complete DNA sequence of an animal is now in the bag

The stock loses out on liquidity and subsequent fund raising then becomes difficult.

FORBES: Entrepreneurship in Japan: Not in Tech

Now 23, Alrawi was just a young girl before the 2003 U.S.-led war in Iraq that toppled Saddam Hussein, but she still recalls that the most basic international brands were then prohibitively difficult to buy.

CNN: New wealth brings luxury shopping to Iraq