اصطلاح :English Idioms

Be up and running .

Meaning:

be working well

If something, especially a system or a machine is up and running, it is functioning.

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When it rains, it pours.

Meaning:

When one thing goes wrong, many other things also go wrong.

You say, "When it rains, it pours" when several similar, especially bad or annoying things happen at the same time.
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Be up in the air 

Meaning:

Be not decided yet

If something is up in the air, it is uncertain because no decision has been made about it yet.
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When pigs fly

Meaning:

Never.

If you you say when pigs fly, you mean something will never happen.

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