VOA慢速英语:疟疾药物可能对儿童和孕妇无效

recommend – v. to suggest that someone do (something) : recommendation – n.

dose – n. the measured quantity of a therapeutic agent to be taken at one time

absorb – v. to take in (something, such as a liquid) in a natural or gradual way : often used as (be) absorbed

enzyme – n. a chemical substance in animals and plants that helps to cause natural processes (such as digestion)

composition – n. the way in which something is put together or arranged

impact – n. a powerful or major influence or effect

distribute – v. to give out to or deliver to

exposure – n. the fact or condition of being affected by something or experiencing something : the condition of being exposed to something

strain – n. a group of closely related living things that look similar but possess one or more unique characteristics

model – n. a set of ideas and numbers that describe the past, present, or future state of something (such as an economy or a business)

clinical – adj. always used before a noun : relating to or based on work done with real patients : of or relating to the medical treatment that is given to patients in hospitals, clinics, etc.