n.（木）髓；精髓；要旨

v.去髓；破壞脊髓；殺死；癱瘓

The stem is hollow with pith cavity. 莖中空,具較大的髓腔。

Both the rubber and the pith ball are negatively charged. 橡膠棒和木髓球兩者都帶負(fù)電荷。

The pith of that theory is serving for people. 那個(gè)理論的精髓是為人民服務(wù)。

n.性質(zhì)描述詞；稱號(hào)；渾名

n.上皮；上皮細(xì)胞

n.[生]上皮細(xì)胞

名詞epithelium的復(fù)數(shù).

adj.上皮的

adj.簡(jiǎn)練的；有髓的

腦脊髓剌毀法