到本世纪中叶，世界人口的三分之二将居住在城市，对能源、水、住房和教育的需求将是巨大的。

By mid-century, two-thirds of the world's population will live in cities. The demands for energy, water, housing, and education will be enormous.

youdao

需求飙升周二将基准油价推升至每桶逾90美元的26个月高位，并给将于本周六召开会议的石油输出国组织（Opec，简称：欧佩克）制造了一个难题。

That surge, which lifted benchmark oil prices to a 26-month high of more than $90 a barrel on Tuesday, is creating a dilemma for the Opec oil cartel, which meets on Saturday.

youdao

我们下周二将举行英语派对。

We'll have an English party next Tuesday!

youdao

Situation number two is I take the same number, and I make a row. They are all in one row.

状态二我将采用同样的数字，并且我做了一个箭头，它们全部都在一列上。

麻省理工公开课 - 固态化学导论课程节选

But you can write it down It's a concept that links itself to a literary or verbal written expression.

但是你们可以将负二的平方用笔写下来,那是种概念，能将其自身,与文学或文字书面的表达连接起来。

麻省理工公开课 - 电影哲学课程节选

So, selenium 2 minus is what's going to be isoelectronic, because if you add two electrons to selenium, you'll get the same electron configuration that you have for krypton here.

负二价的硒离子将是等电子的，因为如果你给硒原子加上两个电子，你会得到,和氪原子相同的电子排布。

麻省理工公开课 - 化学原理课程节选