sophisticated
adj. 復雜的
eg. This process ought to be highly sophisticated.
這個過程應該是非常復雜的。

bednet
n. 蚊帳
eg. Like 82% of children in her country, she sleeps under a bednet.
象該國比例占82%的兒童一樣，他睡覺時有一頂蚊帳。

epidemic
n. [病理學]流行病，傳染病；（流行病的）迅速傳播
eg. An epidemic broke out.
一種流行病突然開始流行。

vaccine
n. 疫苗
eg. The vaccine was used to protect the whole population against infection.
這種疫苗用以為全體居民預防傳染病。

immunity
n. 免疫力
eg. The vaccine provides effective immunity within one week for 95% of persons vaccinated.
該疫苗可使95%的接種者在一周內產生有效免疫力。

tuberculosis
n. 肺結核
eg. Tuberculosis can be reactivated by overwork.
肺結核病可以由于過度勞累而復發。