valveKK [ˈvælv] ｜ /ˈvælv/
GEPT 中高級
C2noun
a device in a brass wind instrument for altering the pitch of a tone by varying the length of the airstream
The trumpet player pressed down on the valve to change the pitch of the note.
（管樂器）活塞；音管
C2noun
a mechanical device used to control the flow of a fluid
The plumber installed a valve on the water pipe to control the water flow.
閥門；閥；控流裝置
C2noun
a structure in a hollow organ, such as the heart, that ensures unidirectional flow of fluid through it
The valve in my heart prevents the blood from flowing back into the atrium.
C2noun
one of the paired hinged shells of certain mollusks and brachiopods
The scientist carefully examined the valve of the clam to determine its age and health.
C2noun
the entire one-piece shell of a snail or certain other mollusks
The seashell collector was overjoyed when she found a perfect valve on the beach.