bladder

• 指体内可扩张的膜状囊，用于储存液体或气体，如膀胱；也可指充气或充液的囊状物，如气囊、水囊。

A noun referring to a distensible membranous sac in the body that stores liquid or gas, or a bag that fills with air.

1. Body organB1formalmedical

   A flexible, muscular sac in the body that stores urine before it is expelled.

   膀胱

   • The doctor examined her bladder for any signs of infection.
   • Drinking plenty of water helps keep the bladder healthy.
   • He felt a strong urge to empty his bladder.

2. General sacB2formalscientific

   A flexible, membranous sac in an animal or plant that can hold liquid or gas.

   囊

   • The swim bladder in fish helps them control their buoyancy.
   • Certain plants have a bladder-like structure to trap insects.
   • The scientist studied the bladder of the specimen under a microscope.

   同义词bullacystpocketsacvesicle

3. Inflatable bagB1informal

   A bag or container that can be filled with air, often used in sports or equipment.

   气囊

   • The soccer ball's bladder needed to be inflated before the game.
   • He replaced the inner bladder of the basketball.
   • The inflatable raft has a separate air bladder for safety.

   同义词air sacballoonpouchsac