explosion; detonation; eruption; eruption (of discontent, etc.); outburst; outpouring
to produce; to yield; to cause; to result from; to arise; to be generated
terrific; staggering; tremendous; frightful; ghastly; horrific
heat; fever; temperature; zeal; passion
above ground; on the ground; earth's surface; this world; this earth
to mow down; to cut down; to knock down; to defeat; to beat
to burn; to burn with (emotion, feeling); to be fired up
to use up; to exhaust; to devote oneself (to); to do one's utmost (for); to do to exhaustion; to do completely
coincident with; while; simultaneously
poison; toxicant; harm; evil influence; ill will; spite
trace; tracks; site; remains; scar
before long; soon; almost; nearly; finally; in the end
to fall ill; to be taken ill
slowly (but steadily); gradually; bit-by-bit; slowly soaking in; slowly permeating; oozing out
to suffer; to groan; to be worried
principle; theory; fundamental truth
basics; fundamentals; basis; foundation
together; at the same time; same; identical
use; utilization; utilisation; application
answer; reply; response; answer; solution; result
structure; construction; arrangement; plan; plot; contrivance
alone; by oneself; on one's own
superior; excellent; brilliant; outstanding
briskly; quickly; promptly
to add; to add up; to increase; to gather (e.g. speed); to include; to count in
on one occasion; once; at one point; at one time
to think of; to hit upon; to come into one's mind; to remember; to recall
development; exploitation
3000; three thousand; many
to break; to destroy; to wreck; to ruin; to break (a bill, etc.)
satisfaction; contentment; sufficient; satisfactory; satisfying (an equation)
nature; natural; spontaneous; naturally; spontaneously
as (for); for; in the capacity of
to have a talk; to tell a story
how; in what way; how about; questionable
sometime; someday; one day; some time or other; the other day; in due course
somewhere; anywhere; in some respects