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1.gray matter 灰质，灰白质；头脑，智力
He observed that the axons in his samples ended in the gray matter, and that their endings were consistent with the location of dendrites.
他发现，在他的标本中，轴突最终终止于灰质，并且它们的结合位点与树突的位置相一致。
2.socioeconomic adj. 社会经济学的
The age, education, and socioeconomic status of these young mothers led to less satisfactory child care.
这些年轻妈妈的年龄、教育状况和社会经济地位导致其子女得不到妥帖的照料。
3.deficit n. 赤字；不足额
They're ready to cut the federal budget deficit for the next fiscal year.
他们已准备好在下一个财政年度削减联邦预算赤字。
