A small underwater vehicle, usually built for science or deep-sea work, that carries people or instruments far down into the ocean. The important difference from a submarine: a submarine is large and can travel on its own for a long time, while a submersible is small, has limited power, and normally needs a mother ship on the surface to launch it, hold its supplies, and bring it home.

A small underwater vehicle一種小型水下載具 usually built for science or deep-sea work通常是為了科學研究或深海作業打造的 that carries people or instruments far down into the ocean能載人或儀器深入海底。The important difference from a submarine跟 submarine（潛水艇）的重要差別在於 a submarine is large and can travel on its own for a long timesubmarine 體積大，可以自己長時間航行 while a submersible is small而 submersible 體積小 has limited power動力有限 and normally needs a mother ship on the surface to launch it, hold its supplies, and bring it home通常需要水面上的母船來下水、補給並帶它回來。

News stories about exploring wrecks or deep-sea trenches almost always involve a submersible. Some carry a crew; some are unmanned and controlled from above.

News stories about exploring wrecks or deep-sea trenches關於探索沉船或深海海溝的新聞報導 almost always involve a submersible幾乎都會用到 submersible。Some carry a crew有些載著船員 some are unmanned and controlled from above有些則是無人的，由上方遙控。

The same word is also an adjective meaning 'able to be put under water and still work' — a submersible pump sits down in a well, a submersible light goes in a pond, and shops label things this way.

The same word is also an adjective同一個字也可以當形容詞 meaning 'able to be put under water and still work'意思是「放進水裡還能運作」 a submersible pump sits down in a wellsubmersible pump（沉水泵浦）放在井裡 a submersible light goes in a pondsubmersible light（潛水燈）放進池塘 and shops label things this way店家也會這樣標示商品。

So context tells you whether you are looking at a vehicle or a description.

So context tells you所以要看上下文才知道 whether you are looking at a vehicle or a description你看到的是一種載具還是一種描述。