名詞 bladder:

1. a distensible membranous sac (usually containing liquid or gas)
   同義詞：vesica
2. a bag that fills with air

1. An instrument for examining visually the interior of a bodily canal or a hollow organ such as the colon, bladder, or stomach.
   內窺鏡，內視鏡一種目測檢查身體通道或中空器官，如結腸、膀胱或胃的內部的儀器
2. Inflammation of the urinary bladder.
   膀胱炎泌尿膀胱的發(fā)炎
3. The bladder collects urine.
   膀胱能儲存尿液。
4. The bladder of the football is broken.
   這顆足球的球膽破了。

blad.der

n.（名詞）

Anatomy Any of various distensible membranous sacs, such as the urinary bladder or the swim bladder, that serve as receptacles for fluid or gas.
【解剖學】 膀胱，囊：一種可膨脹有膜囊狀物，如膀胱或鰾，作為儲存液體或氣體的器官
An item resembling one of the membranous sacs in animals:
氣囊狀物：形狀象動物體內有膜囊狀器官的物體：
例句：
the bladder of a football.
橄欖球球膽

Botany Any of various hollow or inflated saclike organs or structures, such as the floats of certain seaweeds or the specialized traps of bladderworts.
【植物學】 囊狀物：一種中空或充氣的囊狀器官或結構，如某種海草的浮囊或貍藻的特有存水囊
Pathology A blister, pustule, or cyst filled with fluid or air; a vesicle.
【病理學】 水皰，包囊：充氣或充水的水皰、膿皰或包囊；水疤

來源：
Middle English bladdre
中古英語 bladdre
from Old English blôdre * see bhlô-
源自 古英語 blôdre *參見 bhlô-