易混淆的单词： DOSES

Several allow possession of small personal doses of drugs .

几个国家允许个人拥有小剂量的毒品。

But high doses are dangerous .

但大剂量核辐射是危险的。

Even relatively small doses work .

小小的剂量就能发挥作用。

The microchips in the study held only twenty doses of medicine .

该研究中的芯片只携带了20剂量的药物。

They infected all three strains of mice with lethal doses of influenza virus .

他们把这三株小鼠全部感染了致死剂量流感病毒。