VOA慢速英语:Low-Cost Incubator May Save More Babies

collapsible – adj. able to break apart, fold or fall down

incubator – n. a piece of equipment in which very weak or sick babies are placed for special care and protection after their birth

inflatable – adj. something such as a tire or balloon that has air or gas added to make it larger

premature – adj. born before the normal time

mass – adj. a large number or amount of something

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