rough (estimate, outline, etc.); broad; general; generous; openhanded
to be needed; to be wanted
gravitational wave; gravity wave
region; limits; stage; level
whole story; full picture; full particulars
three dimensions; three dimensional; 3D; real world; IRL (in real life)
high dimension; higher dimensions
dimension; perspective; point of reference; level (of something)
simply put; putting it simply; in short
physical law; laws of physics
classification; assortment
low-level; trivial; coarse; low-dimension
interference; intervention; meddling
to stay indoors; to be confined indoors
abstract or impracticable theory
to sing; to chirp; to twitter
energy; energy; strength; energy source; energy resource; food energy
infrared rays; infrared radiation
ultraviolet rays; ultraviolet radiation
to fly about; to flutter about; to flit about; to fly past each other
pleasant feeling; good vibes
great depth; bottomless; great height
to visit (someone) in hospital
to think over; to ponder; to ruminate; to reflect
random; by chance; haphazard; hit-or-miss; unplanned
whatever will be, will be; things happen the way they happen
to summon courage; to be brave
to be seized with fear; to be intimidated; to lose one's nerve; to be frightened; to get cold feet; to chicken out
completely empty (of a residence, etc.); vacant; body from which the soul has left; corpse; shed skin (of a snake, insect, etc.)
to come near; to let someone approach; to bring near; to bring together; to deliver (opinion, news, etc.); to send (e.g. a letter); to let someone drop by
stingy; cheap; very frugal