难得的

It's a oncer in a lifetime chance.

这是一生难得的机会。

Reddish (the pure red of ruby is extremely rare), blue and green are very rare; orange and violet, rare; strong yellow, yellowish-green brown and black stones are more common.

红色，是非常难得的蓝绿色；橙、紫、稀；强黄色、黄绿色、黑褐色结石现象比较普遍。

Telecommunication transmission theory, courseware, rare, and hope we make good use of.

详细说明：电信传输理论课件，很难得的，希望大家好好利用。

We've all savored rare moments of peak performance, of being in the Zone.

& &我们都尝到难得的时刻，峰值性能，而在安全区内。

Both fallopian tubes and vas deferens have the ability to rejoin after separation although this is an extremely rare occurrence.

双方输卵管和输精管有能力重新离职后，虽然这是一个非常难得的发生。

Track sown one of the rare right hand drive M3 GT models and you have a proper performance con amongst BMW cognoscenti .

轨道埋下了一个难得的左膀右臂型号和燃气轮机驱动立方米您正确表现行骗其中宝马不受干扰。

I don't understand why he would sneeze at such a rare opportunity.

我不懂他为何轻视这么难得的机会。

Plasma technology contains millions of "pixels" that contain a rare natural gas.

等离子体技术含有百万&像素&包含了难得的天然气。

This is a rare book.

这是一本难得的书。

This is a rare and valuable book, both for its insight and circumstances.

这是一个难得的书，无论其胆识和情况。

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。