Consider what happens if the communication connection is lost after step 1 and before step 2.
考虑一下,若通信连接在第1步之后,第2步之前丢失,那会发生什么情况。
In this case, remote communication is required (see Figure 2).
在本例中需要进行远程通信(参见图2)。
The 5, 070-pound (2, 300-kilogram) orbiter relayed communication and photographed the planet in ultraviolet light.
轨道器重约5070磅(2300公斤),可进行远程通信,并利用紫外光拍摄。
Number 2 is internal and external communication.
第二是内部和外部的交流。
So, number 2 is that internal and external communication.
所以第二就是,内部和外部的交流。
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