鳍科的

Any of various small,soft - fin ned fishes of the family Cyprinodontidae,which includes the killifishes,topminnows,and many species popular in home aquariums.

科中的一种小软鳍鱼，其中包括？、底？和许多家庭观赏鱼中常见的品种

Any of numerous chiefly tropical, often brightly colored marine fishes of the family Labridae, having spiny fins, thick lips, and powerful jaws, and often valued for food.

隆头鱼一种主要生长于热带的隆头鱼科海鱼，颜色经常是亮丽的，有刺状的鳍、厚嘴唇和有力的下腭，常用作珍贵食用鱼

Penguin Any of various stout, flightless marine birds of the family Spheniscidae, of cool regions of the Southern Hemisphere, having flipperlike wings and webbed feet adapted for swimming and diving, and short scalelike feathers that are white in front and black on the back.

企鹅：一种居于南半球寒带地区的体胖且不能飞翔的企鹅科海鸟，长有适于游泳和潜水的鳍状翼和蹼足，腹部有小的白色鳞片状羽毛，背部有黑色类似状羽毛

Any of various stout, flightless marine birds of the family Spheniscidae, of cool regions of the Southern Hemisphere, having flipperlike wings and webbed feet adapted for swimming and diving, and short scalelike feathers that are white in front and black on the back.

企鹅一种居于南半球寒带地区的体胖且不能飞翔的企鹅科海鸟，长有适于游泳和潜水的鳍状翼和蹼足，腹部有小的白色鳞片状羽毛，背部有黑色类似状羽毛

Small tadpole-shaped cold-water fishes with pelvic fins ''.

小的蝌蚪形冷水鱼，长有形成吸盘的腹鳍；与圆鳍鱼科有关。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。