teach one's grandmother to suck eggs
Учить учёного, "яйца курицу не учат".
I tried to teach my friend about computers but he is a computer expert. It was like teaching my grandmother to suck eggs.
Я пытался научить моего друга кое-чему, связанному с компьютерами, но он эксперт в этой области. Было такое ощущение, что яйцо учит курицу.
Yesterday I taught my teenage students how to use Microsoft Word processor. Awful. It was like teaching my grandmother to suck eggs.
Вчера учил своих студентов-подростков использовать текстовый редактор Microsoft Word. Ужасно. Как будто яйцо учит курицу.
the long and the short
the long and short
All that needs to be said; the basic fact; point.
The long and the short of the matter is that the man is no actor.
The money isn't there, and that's the long and short of it.
the world and his wife
Весь мир и его жена. Cобытие, где было очень много людей.
It's a huge outdoor concert - I imagine the world and his wife will be there.
Это очень крупный концерт на свежем воздухе – там будут толпы народа.
then and there
At that very time and place in the past; right then.
He said he wanted his dime back then and there, so I had to give it to him.
this and that
this, that, and the other
Various things; different things; miscellaneous things.
When the old friends met they would talk about this and that.
The quilt was made of this, that, and the other.
through and through
Completely; entirely; whole-heartedly.
Bob was a ball player through and through.
Mary was hurt through and through by Betty's remarks.
through thick and thin
Through all difficulties and troubles; through good times and bad times.
The friends were faithful through thick and thin.
George stayed in college through thick and thin, because he wanted an education.
throw up one's hands in horror
To be horrified; feel alarmed; give up hope of straightening things out; be shocked by something terrible.
When Mrs. Brown saw the mess the children were making in her living room, she threw up her hands in horror.
Everybody threw up their hands in horror at the destruction caused by the hurricane.