浮囊 亦称气囊。是存在于管水母目（Siphonophora）群体顶端的囊状体，其中充满气体，因此整个群体成为浮囊，在僧帽水母（Physalia）、帆水母（Vele- lla）等的气囊因受风力的作用，群体随风漂流。
浮囊1在貍藻科植物的茎中发现的经过修饰的叶，可以扩大为一种结构用来捕获小型的无脊椎动物。
Bladder 1. a modified leaf, found on the stems of members of the bladderwort family, that develops into a distended structure for trapping small invertebrates.
如果水箱没有充满正常水量(水箱内侧应该有一条水位线)，慢慢地弯曲一下浮囊阀，看水位会不会上升。
If the tank is not filling all the way (there should be a fill line on the inside of the tank), carefully bend the bulb of the float valve up a bit and see if the tank will fill.
这个巨型浮囊内部有一套自给自足的生态系统，其利用太阳产生自身所需的能源，并通过生物过滤来减少水源污染。
The Physalia is a self-sufficient ecosystem that generates all the power it needs from the sun and works to reduce water pollution through bio-filtration .
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