Since the Chengdu Lodz express railway was opened, Chengdu, together with other cities in west China, has developed close trade ties with the European country.

成都罗兹高铁开通以来，成都与中国西部其他城市一起，与这个欧洲国家发展了密切的贸易关系。

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So, when we get really close together, granted, there is a net positive negative charge with a Coulombic force of attraction.

当它们真正离得很近时，假设有一个带正负电的电荷,带有库仑引力。

麻省理工公开课 - 固态化学导论课程节选

It says, if I want to print out something I built in Cartesian form up here, says, again, I'm going to pass it in a pointer to the instance, that self thing, and then I'm going to return a string that I combine together with an open self and close paren, a comma in the middle, and getting the x-value and the y-value and converting them into strings before I put the whole thing together.

这不仅仅是个列表,它是怎么来做的？,流程是：如果我想要返回,一些已经在笛卡尔模式下建好的值，好，再说一遍，我首先要传入一个,指向实例的指针,也就是，然后我会返回一个,由开括号，闭括号,中间的一个逗号,以及提前转换为字符串格式的。

麻省理工公开课 - 计算机科学及编程导论课程节选

The houses were small and close together, with handsome roofs of ceramic tile.

NEWYORKER: Master of Play

When you stand with your feet close together, you can seem timid or hesitant.

FORBES: President Obama, Congress, and the Body Language of Negotiation

Small teams of Special Forces and Marines, supported by flexible close air support and often operating together with indigenous forces, were able to accomplish missions in Afghanistan and Iraq that in the past would have required brigades or divisions.

CENTERFORSECURITYPOLICY: Transforming the United States Global Defense Post