The word "mutual" describes a relationship where what one does for the other, the other does for him. Sex gives mutual pleasure; each partner pleases the other. When a person buys corn from a roadside stand, the transaction is a mutual benefit; one gets the corn he wants and the other gets the money he wants. "Mutual influence" describes a relationship where A influences B but B also influences A.
We say that a person or an idea is influential.
You can say "Main keha haan" in Punjabi to express "I mean it."
In Luganda, you can say "Nedda" to mean "No".
In Bengali, you can say "না" to mean "no".
You can say "Nakukosa" in Swahili to mean "I miss you."
It means that they mean a lot to you, and if they say it back, then the feeling is mutual.
It means that true communication is mutual; there is a give and take.
it probably means she likes you and you should say something to her
If you say to someone "The feeling is mutual" you are telling that person that you agree with them - your opinions, thoughts, feelings mirror theirs. It means: "I feel the same way about sucking your nob"
The word "measurable" is a hedge. This means "There is no influence, none whatsoever, and when I say that I mean that if there is any influence we can't measure it, not with the equipment we now have." That last bit, which is what the word "measurable" is there for, is there to protect the speaker in case he is wrong.
Impossible to say without knowing who you mean by "both."
it means when a country asked another country to trade they say it on status
caus they like you
That is a very vague question, but if you mean military and economic influence, then I would say the Truman Doctrine.
Uongozi
Since influence is not a physical thing with measurable dimensions, it would be better to say "great influence."
Mutual respect