现场教学

on-the-spot lecturing(/teaching)

• rebuff
• rebuke
• rebus
• rebut
• rebuttal
• recalcitrant
• recant
• recapitulate
• recidivism
• reciprocal
• reciprocate
• recital
• reckless
• reclaim
• recluse
• reclusion
• recoil
• recompense
• reconcile
• recondite
• reconnaissance
• recount
• recreant
• recriminate
• recruit