skeletal frame; skeleton; framework; frame; outline
hypothesis; supposition; assumption; tentative theory
inner structure; internal anatomy
resembling closely; being strikingly similar; bearing a strong likeness
knockoff; counterfeit goods
prototype model; experimental machine
original; unique (e.g. product); signature; exclusive
ancestral; hereditary; generation after generation; passing from father to son
mammoth (esp. the woolly mammoth, Mammuthus primigenius)
koku; traditional unit of volume, approx. 180.4 litres; measure of a Japanese-style boat's loading capacity (approx. 278.26 liters)
spear; lance; javelin; lance; (arch.) jeering
to hunt (animals); to search (for a criminal); to go looking for (flowers, etc.); to gather (mushrooms)
half in doubt; half-convinced; dubious; incredulous
desk pad; sheet of plastic (or cardboard, felt, etc.) placed under writing paper; being pinned under; being caught under; model; pattern
revival (e.g. musical); come-back; restoration; rebirth; resurrection
banknote; bill; note; paper money
the ancients; ancient people
startup; booting up; activation; starting (e.g. engine, computer); launch
to think about; to send one's heart out to; to give more than a passing thought to; to think of something far away; to think nostalgically upon (esp. one's hometown)
roughly; approximately; (cutting) in one stroke; (breaking apart) with vigour; (cutting) deeply; (splitting) wide open
interglacial period; interglacial; interglaciation
use; application; employment; utilization; utilisation
to share (someone's) good luck; to follow (someone's) example; to enjoy the same benefits (of someone or something); to be named after
floating; drifting; weightlessness; softly; gently; lightly
to lie on top of each other; to overlap; to pile up
tachyon (hypothetical elementary particle)
prisoner's dilemma; prisoners' dilemma
such; like that; in that way
same kind (race); homogeneousness
global scale; worldwide scale
selection; classification; sorting; screening; triage
opposition; rivalry; competition; antagonism
messenger; envoy; emissary
to plan; to intend; to aspire to; to set aims (sights on)
to think; to consider; to think (of doing); to plan (to do); to judge; to assess; to imagine
unpleasant; disagreeable; abominable; unlucky; inauspicious; ominous
putting one's life on the line; staking one's life (on); risking one's life; life and death situation