Please help to distinguish validity and reliability,Thank yo

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Please help to distinguish validity and reliability,Thank you.
You will not get reward if you translate for me!

what do you need? translation or the actual answer to your question?
再问： Please help to distinguish.Thank you.
再答： Sorry I was away a long time.
validity, is more like a duration of a statement or someting. The validity of a subject is about whether the subject is still functional, working, expired or not.

reliability, from its spelling we can see reliable, meaning whether the subject can be trusted.

Hopefully I have done my job in time, once again sorry for the delay.

Please help to distinguish validity and reliability,Thank yo Please help me translate this sentence into Chinese.Thank yo 是thank you to you help,还是thank you for helping me,还是thank yo help! please!thank you! Please help me,thank. How to distinguish a hug and embrace? how to distinguish between "dissatisfied" and "unsatisfied" How to distinguish "over" and "across"? How to distinguish between moreove and furthermore? please help me!Thank you! Help me please!Thank you! Help me,please!Thank you