每天早晨这位仆人修剪灯芯，添加灯油。 The servant trims the lamp every morning.
石膏灰泥板，灰胶纸柏板由石膏灰泥作芯板结合几层纤维板或纸浆板制成的硬板，在建筑中用于代替灰泥或木板来建造墙壁 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.
这些大木材，表面上看被烟熏得黑黑的，有些地方被虫蛀了，烂了，但内芯却是十分坚硬的。 The great timbers, darkened now by smoke, wormed in places, looking rotten on the surface, but hard in the core, hard as iron.
