Inboard means inside a boat — toward the middle of the hull, not hanging off the side. An inboard engine sits inside the boat; the contrast everyone uses is an outboard motor, which hangs on the back.

Inboard舷內的 means inside a boat意思是在船的裡面 — toward the middle of the hull——朝向船體中間, not hanging off the side而不是掛在船邊外面。 An inboard engine舷內引擎 sits inside the boat裝在船裡面; the contrast everyone uses大家常拿來對比的是 is an outboard motor舷外機, which hangs on the back掛在船尾外面。

As an adjective it names where something lives (an inboard engine, the inboard side). As an adverb it names the direction: you move a box inboard when you shift it away from the edge and toward the center.

As an adjective當形容詞用時 it names where something lives它指的是某樣東西所在的位置 (an inboard engine舷內引擎, the inboard side靠內側那一邊)。 As an adverb當副詞用時 it names the direction它指的是方向: you move a box inboard你把一個箱子 move inboard when you shift it away from the edge and toward the center就是把它從邊緣移向中間。

Sailors and people who work on boats use it; most learners meet it next to outboard, talking about engines.

Sailors and people who work on boats水手和修船的人 use it會用這個字; most learners meet it next to outboard大多數學習者是在 outboard 旁邊遇到它的, talking about engines兩者都在講引擎。

Though actually, the same picture is borrowed for planes and even cars: inboard can mean toward the middle of the body, not the wing-tip or the outer wheel. That is still the “inside, toward the center” idea, just not only for boats. It is a practical word, not a fancy one.

Though actually不過, the same picture is borrowed for planes and even cars這個畫面也被借去用在飛機,甚至汽車上: inboard can mean toward the middle of the body inboard 可以指朝向機身或車身中間, not the wing-tip or the outer wheel而不是機翼末端或最外側的輪子。 That is still the "inside, toward the center" idea這仍然是「裡面、朝中間」這個概念, just not only for boats只是不只限於船。 It is a practical word, not a fancy one這是一個實用的字,不是花俏的字。