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bulb英英释意_发音_bulb同义词辨析_bulb词组搭配_bulb实用场景例句

首页英语词典bulbbulb英英释意

bulb

英[bʌlb] 美[bʌlb]

英英释义实用场景例句

n. 电灯泡；鳞茎；球状物
vi. 生球茎；膨胀成球状

英英释意

1. a modified bud consisting of a thickened globular underground stem serving as a reproductive structure

2. electric lamp consisting of a glass bulb containing a wire filament (usually tungsten) that emits light when heated

3. a rounded part of a cylindrical instrument (usually at one end);: "the bulb of a syringe"

4. lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata);: "the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning"

5. a rounded dilation or expansion in a canal or vessel or organ