to wager; to bet; to risk; to stake; to gamble
laboratory; seminar room; professor's office
key; lock; key (to a problem); clue
strange; odd; peculiar; queer; curious
to be used up; to be run out; to be exhausted; to be consumed; to come to an end
even though it is not; despite not
as usual; as always; as before; as ever; still
to be imminent; to loom; to be approaching; to be impending
to mow down; to cut down; to knock down; to defeat; to beat
iron wall; impregnable fortress; impregnable; invulnerable; unassailable
protection; defense; providence; amulet; charm
to drive away; to clear; to scatter; to disperse
in good health; alive and well; going strong
brave warrior; hero; brave man
plain; simple; reserved (behaviour, attitude, etc.); modest; quite; a (little) bit
steady; firm; solid; secure
difficult; tough; formidable; redoubtable; stubborn
to take advantage of; to impose on; to make an entry (in an account book)
authentication by facial recognition
soft; software; soft hat; felt hat; soft serve ice cream; softball
reinforcement (e.g. of troops)
to beat time; to mark time
hard to understand; incomprehensible; unintelligible
to leave as it is; to defer
attentive; cautious; careful; watchful
fall; decline; lowering; deterioration; degradation
to lead; to take the lead (in doing something); to precede; to go before; to die before (esp. one's spouse, parents, etc.); to be a prerequisite
important; serious; valuable; precious; serious matter; major incident
to make an onslaught (on); to close in (on)
to catch; to capture; to catch hold of (someone); to stop (e.g. a stranger in the street); towards (someone); at (someone)
across; over; beyond; throughout (a period of time); for
as a matter of fact; to tell the truth
state of mind; mentality; psychology
to apply (a rule); to be applicable; to come under (a category); to fulfill; to hold true
there is no need to; it is fine if you don't; unnecessary; does not match; out of reach of
reasonably; fairly; hurriedly; in a rush; approximately; about
I'm sorry; (it's) inexcusable; I feel regretful; thank you very much (for help, etc.)
tough; hard; determined; strong-minded; strong (e.g. sunlight, alcohol); severe
weapons; arms; fighting with swords; sword fight
I fear that it's likely that; with all due respect