n. 妨碍者, 妨碍物, 预防者

Preventer \Pre*vent"er\, n.
1. One who goes before; one who forestalls or anticipates
another. [Obs.] --Bacon.

2. One who prevents or obstructs; a hinderer; that which
hinders; as, a preventer of evils or of disease.

3. (Naut.) An auxiliary rope to strengthen a mast.

{Preventer bolts}, or {Preventer plates} (Naut.), fixtures
connected with preventers to re["e]nforce other rigging.


{Preventer stay}. (Naut.) Same as {Preventer}, 3.