在水上

The timber from the Leadwood trees which is so heavy that can not float was confiscated by government officials, a local journalist told the BBC it appeared the wood was to be exported to China.

这些 Leadwood 的木材太重，不能在水上漂流，现在被政府官员没收。

Any of various aquatic bugs of the family Notonectidae that swim on their backs by means of broadened,oarlike hind legs.

仰泳蝽一种属于松藻虫科的水生虫类，用它们宽阔的、桨状的后腿在水上仰泳

Any of various aquatic bugs of the family Notonectidae that swim on the ir backs by means of broadened,oarlike hind legs.

仰泳蝽一种属于松藻虫科的水生虫类，用它们宽阔的、桨状的后腿在水上仰泳

Any of various aquatic bug s of the family Notonectidae that swim on their backs by means of broadened,oarlike hind legs.

仰泳蝽一种属于松藻虫科的水生虫类，用它们宽阔的、桨状的后腿在水上仰泳

After playing a serious game of tug-of-war with me, it decided to run directly at the boat.

之后玩游戏严重的拔河我，它决定直接运行在水上。

He circled around around in the water like a wheel, 3craning his neck out into the air after them.

他在水上像一个车轮似地不停地旋转着，同时 ssbbww。

Mr Innes said: Because it's so light it pops out of the water like a cork.

Innes先生曾经说道：由于它非常的请，所以它能像软木一样浮在水上。

Maybe you want to try out the big new slide at the water park but your friend isn't sure. You might say: Come on! Don't be an old stick in the mud!

& （你可能想要在水上乐园尝试新的大型滑水道，你朋友却举棋不定，你就可以说：&来嘛，别当老古板了。

He circled around and around in the water like a wheel, craning his neck out into the air after them.

他在水上像一个车轮似地不停地旋转着，同时，把自己的颈项高高地向他们伸着，发出一种响亮的怪叫声，连他自己也吓着了。

He circled around and around in the water like a wheel,craning his neck out into the air after them. Then he uttered the shriek so piercing and so strange that he was quite frightened by himself.

他在水上像一个车轮似地不停地旋转着，同时，把自己的颈项高高地向他们伸着，发出一种响亮的怪叫声，连他自己也吓着了。

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。