pith

pith
noun
[mass noun]

soft or spongy tissue in plants or animals, in particular
（植物或动物的）软组织，海绵组织，尤指
■spongy white tissue lining the rind of oranges, lemons, and other citrus fruits
（橘子、柠檬和其他柑橘类水果的）衬皮
■(Botany)the spongy cellular tissue in the stems and branches of many higher plants
(植)（高等植物的）（木）髓，树心
■(archaic)spinal marrow
(古)脊髓
(figurative)the essence of something
(喻)精髓，要旨，核心
the pith and core of socialism.
社会主义的精髓和核心。
(figurative)vigorous and concise expression
(喻)精练的表达
he writes with a combination of pith and exactitude.
他写作既精练又准确。

verb
[with obj.]

(dated, chiefly figurative)remove the pith from
(旧，主喻)给…去髓，除去…的精要部分
(rare)pierce or sever the spinal cord of (an animal) so as to kill or immobilize it
(罕)（刺入或砍断动物脊髓以）杀死，使瘫痪

派生
pithless
adjective
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