to cling to; to hold on to; to grapple; to set about doing; to begin; to possess (someone; of an evil spirit, idea, etc.)
underwater; behind closed doors; behind the scenes; below the surface
to sink (e.g. a ship); to submerge; to lower (e.g. one's body into a chair); to floor (an opponent)
to push aside; to push one's way through
to boil strongly; to be excited
to flip; to snap; to repel; to use (an abacus); to calculate; to strum
to glitter; to sparkle; to twinkle; to glisten; to gleam; to glint
ancient times; prehistoric times; the distant past; a very long time ago
scholar; academic; scientist; learned person; person of learning
plan; device; idea; design; contrivance; conception
structure; construction; makeup; framework; organization; pattern
windmill; wind turbine; pinwheel (toy); windmill (toy); Clematis patens (species of climbing plant)
to turn; to rotate; to go around; to circle; to make the rounds (of); to go around (several places); to go by way of
if I (we, etc.) could; if one were to ... then ... (an unpleasant thing would happen)
if anything; conversely; putting it the other way around; coming at it from the opposite angle
whirlpool; swirl; eddy; vortex; maelstrom
to raise; to raise up; to wake; to wake up; to cause; to bring about; to start
to move forward; to move on
fast; quick; easy; simple; as soon as ...; the moment ...
close (e.g. friend); familiar; familiar (e.g. story); well-known (to one); close (relatives); closely related
diffusion; spread; popularization; promulgation; familiarization
principle; theory; fundamental truth
power; motive power; three-phase electricity
rational; reasonable; logical
mechanism; machinery; system; structure; organization
projection; protrusion; rupture (e.g. of gas); jetting out; prominence; standing out
progress; advance; improvement; development
element; component; factor; element (e.g. in array); member (e.g. data structure)
to keep step (with); to keep pace (with); to move in lockstep; to align (with another's thoughts or actions); to be on the same page
as expected; sure enough; after all (is said and done); in the end; too; also
to stand watch; to stand guard; to look out; to open (one's eyes) wide
constellation; astrological sign; star sign; zodiac sign
index; indices; indicator
middle of the night; dead of night
coast; shore; coastal waters; inshore waters; coastal area
propulsive power; driving force
seeing in the dark; night vision
period of time; time slot; time zone
to be within others' sight; to be visible; to be conspicuous; to attract public attention; to come under observation
fear; horror; risk; danger; awe; reverence