to examine something very carefully in order to improve it in the future

at the most modern stage of development in a particular type of work or activity

not difficult, easy to implement, easy to understand

If you talk about the nuts and bolts of a subject or an activity, you are referring to the detailed practical aspects of it rather than abstract ideas about it.

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

to confuse someone by using difficult or technical words to describe something

to waste time doing things that others have already done

something that is very old-fashioned and should no longer be used

a sudden success that lasts only a short time and is not likely to be repeated

to allow something new to start

to misunderstand somebody; to become confused

the detailed or complicated facts of something

Newly printed; usually sth sensational and exciting (For example, I've got it hot off the press—he's resigning)