欢快的

The beautiful sky has crowds of kite surf in the wings, that long-term arrhizus thin away my childhood dreams have taken away all my happy time, Under the Canopy is now clear that because of the side streams, the sun shine The more the merry increasingly clear flowing stream, dense shade of a tree under the lark in the loud voices singing loud and clear, this is my dream holiday start.

美丽的天空中有成群的风筝在展翅遨游，那根根细细的长线带走了我童年的梦也带走了我所有的快乐时光，如今天幕下清澈的溪流边那因着太阳的照耀而更加清澈的溪流越发的欢快流淌，茂密的树阴下有声音嘹亮的百灵在高声歌唱，这便是我梦想中假日的开始。

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。