英语翻译Downward communications are messages sent down the chain

英语翻译Downward communications are messages sent down the chain 英语翻译Mobile Unit Originated type messages are sent as a resul 英语翻译（1） Messages can be sent across the land by the electric 请问down the chain在这儿是什么意思? 英语翻译Greek soldiers sent messages by turning their shields to 英语翻译(A)Greek soldier sent messages by turning their shields 英语翻译The feed injector assembly is inserted downward through 英语翻译pigeons are carring the messages,so there are no mistake 英语翻译(2) The axes of tools on the chain magazine are in a pla 英语翻译There are simply too many steps in the supply chain of m Official messages from Omegle will not be sent with the labe 英语翻译Data communications is the process of transmitting and r