When did it become accepted wisdom that students should be able to name the 13th president of the United States but be utterly overwhelmed by a broken bike Chain?

从何时起我开始接受学生应该能够说出美国第十三任总统是谁，但对自行车链条断了却迷惑不解。

And finally number 13, Tom's favorite superhero superman.

最后第十三件事，抖森最喜欢的超级英雄是超人。

Now let's go to number 13 where we have social networking.

现我第十三题，这里我看到了社交网络。

Did you open the 13th door? No, I never opened it.

你有没有打开第十三扇门？没有。小女孩回答。

Step 13, fold the right and left sides of the diamond back along the sides.

第十三步，将菱形的左右两边沿两边对折。

Thirteenth window from the right of the West Tower.

从西塔数第十三个窗子就是。

Number 13, we're going to get real for a second.

第十三 接下这一段很严肃。

Chapter Thirteen Getting into the Right Business.

第十三章 找准自己的行业。

Politics were beyond her and she seldom wasted time thinking about them.

要说政治，思嘉是一窍不通，她也很少花时间考虑政治问题。前些时候，批准过一个第十三条修正案。

Harry ripped open the paper and found page thirteen.

哈利撕开报纸找到第十三版。

They have reached the agreement during the 13th round of high-level consultations on maritime affairs.

双方第十三轮海洋事务高级别磋商中达成这一协议。

Today, it's officially Black History Month and February 1st is National Freedom Day, honoring the signing of the 13th Amendment by President Abraham Lincoln which abolished slavery in the U.S.

今天是法定黑人历史月，2月1日也是全国自由日，以纪念亚伯拉罕·林肯总统签署的美国宪法第十三条修正案废除奴隶制。

Number 13, as soon as the sun comes out we leave work, when it's a good time to leave work, normally five o'clock, and we go straight to a pub garden.

第十三，太阳一下山我就下班，这时候是下班的好时机，一般五点左右，下班后直接去酒吧公园。

You find that, you know, you become very very familiar with the contents of like lecture one, two and three, but like lecture 13,14,15 out of like maybe 18, you like a bit... like a little bit shaky on those.

你会发现，你会非常非常熟悉第一课、第二课和第三课的内容，但是第十三课、第十四课、第十五课，大概是第十八课，你会记得不那么清楚了。

It contains America's fourth, seventh, ninth, eleventh, and thirteenth largest cities and is the fourth most heavily populated mega-region in the United States behind Southern California, the Northeast Megalopolis, and the Great Lakes.

它包含了美国第四、第七、第九、第十一和第十三大城市，是美国人口第四密集的特大地区，仅次于南加州、东北特大城市和五大湖区。

We would also ask you to remember that any magical activity that risks notice by members of the non-magical community Muggles is a serious offense under section 13 of the International Confederation of Warlocks’ Statute of Secrecy.

另外请记住，根据国际巫师联合会保密法第十三款，任何可能引起非魔法界成员（麻瓜）注意的魔法活动，均属严重违法行为。

“Here, ” he said, and with a wave of his wand, he sent twelve full glasses soaring through the room to each of them, holding the thirteenth aloft.

“给，”他说着挥了挥魔杖，十二杯满满的酒飞到房间里每个人的手中，他自己高举着第十三杯。

I'm Lake Erie, the forth largest of the Great Lakes in North America, the 13th largest freshwater lake in the world by surface area.

我是伊利湖，北美洲五大湖中第四大的，地表第十三大的淡水湖。

It was not until after Lincoln was murdered, however, that the states approved the Thirteenth Amendment to ban slavery everywhere in the country.

然而，直至林肯被谋杀后，各州才通过了第十三条修正案，彻底废除奴隶制度。

Roopun chairs the ongoing 13th session of the UNESCO Intergovernmental Committee for the Safeguarding of Intangible Cultural Heritage held in Port Louis, Mauritius.

鲁蓬主持了毛里求斯路易斯港举行的联合国教科文组织非物质文化遗产保护政府间委员会第十三届会议。