难得的

Obie: You are a very rare woman. Tony doesn't know how lucky he is.

你是个很难得的女人， Tony 身在福中不知福。

This is a opportunity of once in a blue moon.

这是一生难得的机会。

There is a chance once in a blue moon.

这可是难得的机会。

There is a chance once in blue moon.

这是个难得的机会。

There is a chance once in a blue moon .

这是一个难得的机会。

This is a chance once in a blue moon !

这是个很难得的机会！

This is a one in a thousand chance for the whole life.

这是一生难得的机会。

It's a opportunity one in a thousand.

这是一生难得的机会。

This opportunity is one in a thousand.

这是一生难得的机会。

This opportunity is one in a thousand in your life.

这是一生难得的机会。

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。