芯的用法和樣例：
例句
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每天早晨這位僕人修剪燈芯，添加燈油。
The servant trims the lamp every morning. -
石膏灰泥板，灰膠紙柏板由石膏灰泥作芯板結合幾層纖維板或紙漿板製成的硬板，在建築中用於代替灰泥或木板來建造牆壁
A rigid board made of layers of fiberboard or paper bonded to a gypsum plaster core, used instead of plaster or wood panels in construction to form walls. -
這些大木材，表面上看被煙熏得黑黑的，有些地方被蟲蛀了，爛了，但內芯卻是十分堅硬的。
The great timbers, darkened now by smoke, wormed in places, looking rotten on the surface, but hard in the core, hard as iron.
