race; tribe; species; genus; stellar population (i.e. population I, II and III)
to cross over; to go across; to extend; to cover; to range
art; technique; means; way; trick; trap
to know; to understand; to be aware of; to consent; to agree
called; named; as many as; as much as; all ...; every single ...
as much as possible; as far as possible; whenever possible; if (at all) possible
throughout; over a period of ...; over a span of ...
preservation; conservation; storage; saving (e.g. to disk)
every conceivable; every single; every possible; all kinds of
to try everything; to leave no stone unturned
old; aged; long; since long ago; of the distant past; long-ago
continent; continental Asia (esp. mainland China); continental Europe
construction; establishment
investigation (e.g. academically, of the unknown); close inquiry (enquiry)
reserve; spare; preparation; preliminaries
outer space; void of space
to decide to; to pretend that; to make a practice of doing; to make it a rule to
strict; severe; stringent; rigorous; rigid; firm
natural disaster; cataclysm
interval; period of time; among; between; good opportunity; chance
above ground; on the ground; earth's surface; this world; this earth
in comparison to; rather than
far away; far off; far; long ago; long before
expectation; anticipation; hope; promising; rising; up-and-coming
even; even if; even though; because of; on the grounds that
together with; as X, then Y (e.g. as we age we gain wisdom, as wine matures it becomes more valuable, etc.)
to lose; to miss (a change, opportunity); to lose (a loved one); to be bereaved of; to concede (goals, points, etc.)
expectation; anticipation; prediction; forecast; conjecture
furthermore; again; after all; more and more; moreover; even more
stability; steadiness; equilibrium
environment; circumstance
technology; engineering; technique; skill; art; craft
solid; strong; sturdy; durable; stout
starship; interstellar spacecraft
preservation; integrity; conservation; maintenance
purpose; goal; aim; objective; intention
good; advantage; sake; purpose; consequence; result
given that ... it is only natural that ...; ... being the case, it is unavoidable that ...; (precisely) because ...; contrary to expectations ...
faster-than-light speed; super luminal speed