261. tough, 这个词是口语中使用频率比较高的，a tough guy, 难缠的人，一个不怕困难的人。It is pretty tough to get a reservation. 现在订票很难。这里的tough就是difficult的意思。You just have to tough it out.没有别的办法，你只有杀出重围了。tough it out 坚持克服困难。
262. rough, 注意，rough与tough意思不同，容易混淆。I
have some rough patches with my wife. 我有好些地方得与老婆去磨合磨合了。
263. I am here now. I need to get in
a swing of it. 我已经到了，该投入行动了。
264. My legs are giving out, my brain
is going to neutral, I need to take a shower and go to bed.
我的腿不听使唤了，我大脑变得迟钝，我要冲个凉然后上床睡去了。
265. Once you get to the meat of the
subject, you will start to enjoy it. meat肉，这里做“精髓”解。
266. nub：要点，主要的东西。the nub of the
story 故事简介. The nub of the problem concerning this rule is
protection of privacy. 涉及到这个条规的实质问题是保护隐私。
267. Here's the rub = used when
saying that a particular problem is the reason why a situation is
so difficult.= 问题难就难在这里
268. Watch out for bait-and-switch
tactics. 要小心有人搞调包。街头骗子常用的手法就是快速地掉包，先用一个诱饵，乘你不注意掉包。
269. 美国人喜欢打球，所以ball用法很广：
a) That is a totally different ball game. 那是完全不同的一种环境（制度）。I feel
like this is a whole new ballgame. 我觉得只是一次全新的经历（全新的工作/挑战）。
b) The little girl had a ball at school today.
这个小女孩今天在学校参加了一个舞会。
c) on the ball 的含义是，有知识，有才华，懂行，办事利索。He is a teacher who is really
on the ball. 他是个了不起的老师。a manager who has a lot on
the ball很懂行的经理; a student who has nothing on the ball
学得一塌糊涂的学生。
d) The ball is in your court now.现在球已到你那边了。轮到你了；由你发言了；由你做决定了。
e) 或者说，You have the ball now. 现在是轮到你了。
f) Can we have our ball back？ 我们能重修旧好吗？"I don’t think so," Bolton
responded.
g) fireball：火球，例如像原子弹爆炸一般，引申为“成功、热情、精力旺盛”之意。I hope John will join
us, he is a fireball.(or he is a ball of
fire.)我希望约翰能加入我们，他是个热情旺盛的人。the hardball politics, soft
ball,
270. And I applied my mind to know wisdom and to know madness and folly. I perceived that this also is but a chasing after wind. For in much wisdom is much vexation, and those who increase knowledge increase sorrow. 我又专心察明智慧、狂妄和愚昧，乃知这也是捕风。因为多有智慧，就多有愁烦；加增知识的，就加增忧伤。《旧约·传道书》第1章
青春就应该这样绽放 游戏测试：三国时期谁是你最好的兄弟！！ 你不得不信的星座秘密