Idp
集中數據處理
??? 情景例句
No advertising material.
謝絕廣告。
After a successful career in business,he was appointed ambassador.
在生意的成功以后，他被指定為大使。
since ground stations and satellites cannot see everywhere.
因為地面工作站和衛星不可能看到地球上的每一個地方。