Airspace is the sky over a country that the country treats as its own, the way the land inside a border is its land. Planes need permission to fly through another country's airspace; if they do not have it, governments talk of a violation, not just a flying mistake.

Airspace is the sky over a countryAirspace 是一個國家上空的天空 that the country treats as its own這個國家把它當成自己的, the way the land inside a border is its land就像邊界內的土地是它的領土一樣。Planes need permission to fly through another country's airspace飛機要有許可才能飛越別國的領空; if they do not have it如果沒有許可, governments talk of a violation, not just a flying mistake政府會說這是「侵犯」，而不只是飛行上的失誤。

News uses close airspace, enter airspace, restrict airspace — often in wars, protests, or when a volcano fills the sky with ash. It is a formal, news-and-aviation word; you would not use it for the sky above your house unless you were joking.

News uses close airspace, enter airspace, restrict airspace新聞會用 close airspace（關閉領空）、enter airspace（進入領空）、restrict airspace（限制領空）, often in wars, protests, or when a volcano fills the sky with ash常見於戰爭、抗議，或是火山噴發、灰燼佈滿天空的時候。It is a formal, news-and-aviation word這是個正式的字，用在新聞和航空領域; you would not use it for the sky above your house unless you were joking除非在開玩笑，否則不會拿它形容自家上空的天空。

Though actually, pilots and air-traffic people also use airspace for a slice of sky that is not a whole country: a city's airspace, military airspace, controlled airspace — meaning a volume of sky with rules. The learner-dictionary picture is the country one; real talk is a bit wider. Still, the legal “this sky belongs to this country” sense is the one you will meet first in newspapers.

Though actually, pilots and air-traffic people also use airspace for a slice of sky that is not a whole country不過其實，飛行員和航管人員也會用 airspace 指不是整個國家的一片天空: a city's airspace, military airspace, controlled airspace像 a city's airspace（城市的空域）、military airspace（軍事空域）、controlled airspace（管制空域）, meaning a volume of sky with rules指的是有規則管理的一塊天空。The learner-dictionary picture is the country one學習型字典給的畫面是「國家」這個層次; real talk is a bit wider實際使用起來範圍更廣一點。Still, the legal “this sky belongs to this country” sense不過，「這片天空屬於這個國家」這個法律上的意思 is the one you will meet first in newspapers是你在報紙上會最先碰到的。