start; commencement; beginning; initiation
should; must; -able; probably; likely
doubt; question; suspicion; dubiousness
(many) mountains; very much (wanting to do something one cannot); greatly; so many; a lot of
above; up; top; summit; surface; before; previous
artificial satellite; man-made satellite
daytime; during the day; time from sunrise until sunset; diurnal period
monitoring; watching; observation; surveillance; guarding; supervision
to slip through; to slip past; to evade
difficult; hard; impossible; unfeasible; fussy; particular; gloomy
thinking; thought; idea; notion; intention; plan
together; at the same time; same; identical
sky; the skies; high-altitude sky; upper air
to stretch around (e.g. a fence, dragnet, etc.); to lay out (e.g. a wiring system, network, etc.); to string up (e.g. an antenna, ship's rigging, etc.)
class; order; et cetera; etc.; equal; iso-
analysis; analytical study; parsing; parse
to discover; to find (e.g. an error in a book); to locate; to find (e.g. something missing); to be used to seeing; to be familiar with
usual; ordinary; normal; regular; general; common
period of time; time slot; time zone
to be reflected; to harmonize with (harmonise); to come out (photo); to be projected; to be displayed (on a screen)
to be lost (e.g. luggage); to be missing; to be used up; to be run out; to disappear (e.g. pain); to be lost (e.g. a dream, confidence)
it does not mean that ...; I don't mean that ...; it is not the case that...
infrared rays; infrared radiation
figure; form; appearance; dress; state; condition
to be seen; to be in sight; to look; to seem; to come
artificial; man-made; human work; human skill; artificiality
large; large-sized; large-scale; big
quantity of heat (e.g. in calories, BTU, etc.); heat value; calorific value; (degree of) enthusiasm; zeal; passion
big; large; loud; extensive; spacious; important
in order; in turn; one by one
round robin; having no losing tickets (of a lottery); brute force (in cryptography); using all combinations
to examine; to look up; to investigate; to check up; to sense; to study
on purpose; deliberately; intentionally
deep; profound; dense; thick; close (relationship); intense; strong
size; large and small (sizes); various sizes; daishō (matched pair of long and short swords); large and small drums; long months and short months; sic bo (Macao dice game)
to measure; to weigh; to survey; to conjecture; to infer; to surmise
though; although; be that as it may; nonetheless
abruptly; suddenly; all of a sudden; without warning
low (rank, degree, value, content, quality, etc.); low (position); close to the ground; short (height); deep (voice); in a low key