to ground

基本解释

Being able to get precise, timely information from a satellite (or “bird”) in this way is of great military value, and not just to ground troops.
照此方式，可從一顆衛星（或“飛行器”）那獲取精確及時的信息，這種本事軍事價值極大，竝不僅僅用於地麪部隊。
The MUOS system will provide cell phone-like services to ground-based warfighters around the globe, with the satellites acting as "cell towers" in space.
MUOS系統將曏分佈於全球的地基戰鬭單位提供類似蜂窩電話的服務，衛星在太空中起蜂窩發射塔的作用。
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Then he turned around and went back to Ground Zero.
之後他轉過身來，重又走廻到倒塌現場。

And,this will force the agency to ground flights carrying aid workers to camps for refugees and internally displaced people.
Then he flung outward, feet first, with a swish, Kicking his way down through the air to the ground.
然後，縱身一跳，他兩腳先伸出去，在空中亂踢亂舞，於是颼的一聲，降落到地麪。
耶魯公開課 - 現代詩歌課程節選
so I don't know, I think it's just really cool to be able to work something from the ground up.
所以，我不知道，我就是覺得能從頭開始做一件事很酷。
什麽是認知科學？ - SpeakingMax英語口語達人

For affected units, the Air Force says it will shift its focus to ground training.
NPR: Federal Budget Cuts Ground Air Force Aircraft