to hold fast; to protect to the end
control (by the state); controlling; coordination; air traffic control
to call out; to ask someone to come
full particulars; the whole story; from beginning to end
immersing oneself in; being absorbed in; devoting oneself to; giving oneself up entirely to
studying abroad; studying at a different school, etc. (usu. for a specific purpose)
several weeks; a few weeks
to be unable to; to find difficult (unpleasant, awkward, painful) to do; to serve two or more functions or roles simultaneously; to contain (or combine) two or more features; to work in two or more jobs simultaneously (positions, etc.); to do alongside
to engage in; to participate in; to take part in; to be involved in
to see someone off (at a station, an airport, etc.); to escort (e.g. home); to follow something with one's eyes until it is out of sight; to let pass; to pass up (an opportunity etc.); to shelve (a plan, deliberation on a bill, etc.); to postpone
to succeed (a person, to a position, etc.); to inherit; to patch (clothes); to mend; to add (e.g. charcoal to the fire); to replenish with