difficult to ...; hard to ...
parts; accessories; components
to insert; to put in; to have a griping pain; to flow in; to shine in
utensil; implement; tool; instrument; appliance; apparatus
to use; to make use of; to utilize; to utilise
to assemble; to set up; to construct
may; might; perhaps; may be; possibly
custom; practice; said; aforementioned; instance; example
applying (e.g. a technology); adoption
it does not mean that ...; I don't mean that ...; it is not the case that...
on the occasion of; circumstances; juncture
outside (e.g. of a building); exterior; outside (of a group, company, etc.); outside world
with a tap; with a knock; smoothly (proceed); without a hitch; even; equal
entrance; entry; gate; approach; mouth
circuitous; roundabout; indirect
I see; that's right; indeed
to stop up; to close up; to stand in the way; to obstruct; to occupy; to fill up
where; what place; how much (long, far); what extent
shutting tightly; making airtight; sealing hermetically
difficult to imagine; quite unlikely to; very doubtful; would not expect
when it becomes; when it comes to
admiration; appreciation; enjoyment; viewing (for pleasure)
possible; potential; practicable; feasible
to get into a panic; to be flustered; to panic; to get in a flap
mess; sorry state; -ways; -wards; in the act of ...; just as one is ...
if it is the case that ...
supposing; even if; granting that; temporarily; provisionally; for the time being
in that case; (might not be what was expected or hoped for but) if that's the case
convenient; favorable; favourable; expedient; expedience
meddling; interfering; choosing to keep the drawn tile and discarding a different one
disturbance; obstruction; hindrance; jamming; interference
to plan one's next moves; to work out a plan
good; OK; all right; fine; very well; will do
conclusion; decision; judgement; affirmative
-ical; -ive; -like; -ish; (something) like; along the lines of
dear me!; good gracious!; well; let me see; now
conviction; belief; confidence
sticking (in one place, position, etc.); settling; becoming established (of a custom, system, etc.); taking hold; fixation (photography); fixing
anyhow; anyway; somehow or other; apart from ...; setting ... aside
I agree with you; it is as (someone) says
vast; extensive; immense; huge; large; grand