The soft, spongy tissue in the center of plant stems

• The whitish inner layer of a citrus rind

植物茎中心的柔软海绵状组织

• 柑橘果皮内侧的白色海绵层

The soft inner tissue of an animal organ or body

• Especially the spinal cord; spinal marrow
• Also the spongy interior of a horn or a feather shaft

动物器官或身体内部的柔软组织

• 尤指脊髓
• 亦指角或羽轴内的海绵状组织

The central or innermost part of something; the core

• The soft inner portion of bread or similar foods

事物的中心或最内在部分；核心

• 面包等食物的柔软内芯

The essential or most vital part; the essence

• Force, vigor, or substance; concise power in speech or writing
• Grave importance or weight

事物的精要或最关键部分；精髓

• 力量、活力或内涵；言辞的简练之力
• 严肃的重要性与分量

To kill or render insensible by destroying the spinal cord

• To remove the pith from something; to strip of essence

切断或破坏脊髓使其致死或失去知觉

• 去除髓质；比喻为剥夺其精髓