Magma is rock so hot, deep under the ground, that it has melted and can move. It lives under volcanoes and in cracks far below our feet.

Magma岩漿 is rock so hot, deep under the ground是地底深處熱到融化的岩石, that it has melted and can move可以流動。It它 lives under volcanoes存在於火山底下 and還有 in cracks far below our feet我們腳下很深的裂縫裡。

When that same melted rock comes out into the air, we stop calling it magma and start calling it lava. Same stuff, different place: magma is the underground name, lava is the above-ground name.

When that same melted rock comes out into the air當這同一塊融化的岩石跑到地面上的空氣中時, we我們 stop calling it magma就不再叫它magma and而 start calling it lava改叫它lava（熔岩）。Same stuff, different place同樣的東西，只是地方不同: magma is the underground namemagma是地底下的名字, lava is the above-ground namelava是地面上的名字。

It is not an everyday word. You use it in science class, in news about a volcano, or when someone is being a little dramatic about anger (“he was magma inside”).

It它 is not an everyday word不是一個日常用字。You你 use it in science class會在科學課用到它, in news about a volcano火山相關的新聞裡, or或 when someone is being a little dramatic about anger當有人形容自己很生氣、講得比較誇張時 ("he was magma inside")（例如「他心裡像岩漿一樣」）。

Scientists also talk about thick magma and runny magma, because that changes how a volcano behaves — slow and sticky, or sudden and fast.

Scientists科學家 also talk about thick magma and runny magma也會談到thick magma（濃稠的岩漿）和runny magma（稀薄的岩漿）, because因為 that changes how a volcano behaves這會改變火山的行為 — slow and sticky是緩慢黏稠, or或 sudden and fast還是突然又快速。