If something is oiled, someone has put a layer of oil on it. A baker uses an oiled tin so the cake comes out. A carpenter oils wood to feed it and make it shine. You oil a lock or a chain so it does not stick.

If something is oiled如果某樣東西是oiled（上了油的）, someone has put a layer of oil on it就表示有人在它上面塗了一層油. A baker uses an oiled tin烘焙師會用上了油的烤模, so the cake comes out這樣蛋糕才拿得出來. A carpenter oils wood木匠會給木頭上油, to feed it and make it shine來滋養木頭並讓它發亮. You oil a lock or a chain你會給鎖或鍊子上油, so it does not stick讓它不要卡住。

The word is just oil with -ed, used like an adjective.

The word is just oil with -ed這個字就是oil加上-ed, used like an adjective當形容詞用。

Oily is a neighbour but not the same: oily often means it feels greasy, maybe in a way you do not want — oily hair, oily food. Oiled usually means the oil was put on on purpose, and it is doing a job.

Oily is a neighbour but not the sameoily是它的近親，但不完全一樣: oily often means it feels greasyoily常常是指摸起來油膩, maybe in a way you do not want而且可能是你不想要的那種油 — oily hair, oily food像oily hair（油頭）、oily food（油膩的食物）。 Oiled usually meansoiled通常是指 the oil was put on on purpose油是故意塗上去的, and it is doing a job而且它正在發揮作用。

People also say a well-oiled machine when they mean it runs smoothly; the oil is half real and half a picture. In older informal British English, oiled can also mean drunk; you may meet that in stories, but it is not the everyday meaning.

People also say大家也會說 a well-oiled machinea well-oiled machine（上好油的機器） when they mean it runs smoothly意思是指運作得很順暢; the oil is half real and half a picture這裡的油一半是真的，一半是比喻. In older informal British English在較早期的英式口語裡, oiled can also mean drunkoiled也可以指喝醉; you may meet that in stories你可能會在故事裡遇到這個意思, but it is not the everyday meaning但這不是日常的用法。