1、orbit
(天體等運行的)軌道
Mars and Earth have orbits which change with time.
火星與地球的運行軌道隨著時間而變化
。The planet is probably in orbit around a small star.
這顆行星可能正環繞著一顆小恒星運行
。環繞…的軌道運行
In 1957 the Soviet Union launched the first satellite to orbit the earth.
1957年,蘇聯發射了第一顆繞地衛星
。(影響所及的)范圍,領域,圈子
In the late 1970s Laos fell within the orbit of Vietnam and the Soviet Union.
20世紀70年代末,老撾被納入了越南和蘇聯的勢力范圍
。2、mission
(尤指赴他國的)使命,重要任務
Salisbury sent him on a diplomatic mission to North America.
索爾茲伯里派他到北美執行一項外交任務
。He has been on a mission to help end Lebanon's political crisis.
他已經被派執行一項旨在幫助結束黎巴嫩政治危機的使命
。駐外使團;出國代表團
the head of the mission in South Africa.
駐南非代表團團長
a senior member of a diplomatic mission.
外交使團的高級成員