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1.mutation n. [遗] 突变；变化；元音变化

Scientists have found a genetic mutation that appears to be the cause of Huntington's disease.
科学家们已经发现了一种可能是引起亨廷顿舞蹈病的基因变异。

2.parasite n. 寄生虫；食客

Kangaroos harbour a vast range of parasites.
袋鼠身上有各种各样的寄生虫。

3.seizure n. 没收；夺取；捕获；（疾病的）突然发作

Police have made one of the biggest seizures of heroin there's ever been.
警方这次缴获的海洛因是迄今为止数目最大的几宗之一。

4.infiltrate vt. 使潜入；使渗入，使浸润 vi. 渗入 n. 渗透物

Activists had infiltrated the student movement.
激进分子已经渗入学生运动。

5.genetics n. 遗传学

Genetics is also bringing about dramatic changes in our understanding of cancer.
遗传学也正使我们对癌症的理解发生巨大的变化。

6.testimonies 证据

His testimony was an important element of the prosecution's case.
他的证词是本起公诉案中的一个重要因素。