它不打算极力地获取信息交换的所有细节,而是作为一种帮助您了解重要交换的重要方面的机制。
It is not intended to exhaustively capture all the details of information exchange, but rather ACTS as a mechanism to help you understand the most important aspects of significant exchanges.
交换电话号码很重要,尤其是当你或你的邻居可能正在游玩时。
It's important to exchange numbers, especially if you or your neighbour may be traveling.
在当今世界的许多地方,这仍然是正确的,但其他一些东西正变得越来越重要,如信息的交换,以及我们用于交换信息的技术。
In many parts of the world today this is still true, but something else is becoming more important—the exchange of information, and the technology that we use to do this.
These cells around the outside form the interface, the placenta, where the maternal blood circulation meets the embryonic circulation and nutrients are passed back and forth that way in a very highly regulated and important way.
外层的细胞形成接触面,即胎盘,是母血与胎血,进行血液交换,及营养物质交换的场所,整个过程高度有序并且非常重要
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