难得

This is a rare chance in the life.

这是一生难得的机会。

This is a rare chance in life.

这是一生难得的机会。

It is a rare chance in the life.

这是一生难得的机会。

It is a rare chance in one's life.

这是一生难得的机会。

This is a rare chance in one's life.

这是一生难得的机会。

It's a rare opportunity.

这是一个难得的机会。

THIS IS A RARE CHANCE IN YOUR LIFE.

这是一生难得的机会。

This is the rare chance of my life !

这是一生难得的机会。

This is one of my rare visits to China.

这是我难得去中国观光的一次。

This is a very rare opportunity to study, not to miss!

这是一个非常难得的学习研究机会，不要错过了！

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。