“能活着真是件好事”这只三叶状生物说道，它突出的触角和触须因为对未来的希望而断断续续的抖动着。

"It's a wonderful time to be alive, " said the tri-lobed creature, its protruding feelers and antennules twitching spasmodically with anticipation.

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大型管水母，由气泡状浮漂和刺状触须。

Large siphonophore having a bladder like float and stinging tentacles.

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放射状对称的动物，囊状身体覆有刺样结构的触须，只有一个开口；它们以珊瑚和水母的形式出现。

Radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms.

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