慢速英语:3-D Printed Device Helps Children with Rare Breathing Disorder

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dimensional – adj., related to a measurement like length, width or depth

layer – n. something that is spread over an area; a piece of material or other substance lying on top of something else.

intensive care – n. an area of a hospital where special medical equipment and services are provided

splint – n. a support that is used to hold a body part in place while it heals.