Substantia compacta
[医] 骨密质
🧩 词语组成解析
nigra[解]黑质, 塞梅林氏神经节
[医]（蜕膜）致密层
🗣️ 情景例句
And the others. I do have it all.
还有其他的。我确实拍齐了。
His name is John Smith.
他叫约翰、史密斯。
No one noticed the boy as he crept off.
当男孩从船里爬出来时，谁也没有发现他。