Basically, a vaccine helps get our immune system ready to fight off a certain illness.

基本上，疫苗可帮助免疫系统对抗特定疾病。

Breast milk is usually easier to digest than formula and breast milk contains antibodies that protect babies from certain illnesses.

比起奶粉，母乳更易消化，母乳中还含有抗体，保护婴儿免受某类疾病危害。

If someone from our family has a certain illness that could change your whole family completely, you know, like in a year, in a month, in a day.

如果我们家里有人得了某种病，可能会彻底改变你的整个家庭，你知道，就像在一年、一个月、一天之内。

" To cure" (cure) someone means to make someone better so that they no longer suffer from a certain illness or sickness or, in the case of Mary Baker, injury.

“治愈”（治愈）某人意味着使某人变得更好，以便他们不再遭受某种疾病或病痛，或者在玛丽贝克的情况下，伤害。

" To get tested" for a certain disease means that you go to a doctor or to a laboratory where they take some of your blood to see if you have a certain illness or disease.

“接受某种疾病的检测” 意味着您去看医生或去实验室， 他们会抽取您的一些血液， 看看您是否患有某种疾病。