好好珍惜这次培训机会英语

This is a chance once in a blue moon/It's a once in a lifetime chance.i really need cherish it.once in a blue moon千载难逢

opportunity is not available for everyone, you shall cherish it carefully.

It is a very rare opportunity, I wil hold on to it carefully.(这是一个很难得的机会,我会好好抓住它的.) 前面两位说的都没有错， 不过英文没有那么。。。正规？的说法。 不知怎么解释， 不过一般如果你跟人家说英文是用上面的说法。 听起来会比较正常。（对了， 我的意思是楼上用的有点像中国的古文（比喻而已），你跟别人讲话是不会那样说话的）by雁子~

i value this chance very much

I really appreciate and cherish this golden opportunity.

This is a very rare opportunity, I must cherish it well