2008-04-12英语单词

**recur
__To happen, come up, or show up again or repeatedly.See Synonyms at return
__To return to one's attention or memory.
__To return in thought or discourse.
__To have recourse:recur to the use of force.

**recipient
__One that receives or is receptive.
__One who receives blood, tissue, or an organ from a donor.

**reconcile
__To reestablish a close relationship between.
__To settle or resolve.
__To bring (oneself) to accept:He finally reconciled himself to the change in management.
__To make compatible or consistent:reconcile my way of thinking with yours.See Synonyms at adapt

**reciprocal
__Concerning each of two or more persons or things.
__Interchanged, given, or owed to each other:reciprocal agreements to abolish customs duties; a reciprocal invitation to lunch.
__Performed, experienced, or felt by both sides:reciprocal respect.
__Interchangeable; complementary:reciprocal electric outlets.
__Grammar Expressing mutual action or relationship. Used of some verbs and compound pronouns.
__Mathematics Of or relating to the reciprocal of a quantity.
__Physiology Of or relating to a neuromuscular phenomenon in which the excitation of one group of muscles is accompanied by the inhibition of another.

**radioactive
__The radioactive waste from nuclear power stations could be very dangerous.