in·board /ˈɪnˌbord, ˌbɔrd/
(a.)內側的(ad.)向內,在船內
In·board a. & adv.
1. Naut. Inside the line of a vessel's bulwarks or hull; the opposite of outboard; as, an inboard engine; an inboard cargo; haul the boom inboard.
2. Mech. From without inward; toward the inside; as, the inboard stroke of a steam engine piston, the inward or return stroke.
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inboard
adj : located within the hull or nearest the midline of a vessel
or aircraft; "the inboard flaps on the wing" [ant: outboard]