1.negligence n．疏忽，粗心大意(carelessness)

詞根記憶：來自negligent(a．忽略的：疏忽的)

例:If the insurance company is able to prove excessive loss due to owner's negligence, it may decline to pay the money.

派生詞：negligible(a．可忽略不計的)

2.negligible a．可忽略不計的（so small or unimportant or of so little consequence as to warrant little or no attention）；微不足道的（trifling）

例：Inflation in the intervening period has been negligible, and the increase has been duly received by all eligible Runagians.

同根詞：neglect(v.疏忽；忽視)

3.negotiate v．(with)談判；（通過談判或協商）達成協議(to arrange or settle by discussion and mutual agreement)

聯想記憶：ne+got(獲得)+iate--談判是為了獲得一致意見--談判

例:It is against the police department's policy to negotiate with kidnappers.//They gathered workers for particular jobs and then negotiated a contract between workers and employers.

派生詞：negotiation(n．談判，協商)

4.negotiation n．談判：協商（the action or process of negotiating or being negotiated）

詞根記憶：來自negotiate(礦商議，談判)

例：The methods of negotiation are available to the purchasing company.

同根詞：negotiable(a．可協商的)

5.nematode n．線蟲類(any of a phylum, Nematoda or Nemata of elongated cylindrical worms parasitic in animals or plants or free-living in soil or water)

例：The nematodes can lie dormant for several years in their cysts(包囊).

6.neural a．神經（系統）的（of relating to．or affecting a nerve or the nervous system）

詞根記憶：neur(神經)+al--神經的

例：This drug will damage neural connections in rats.

派生詞：neurotransmitter(n．【生】神經傳遞素)

7.neuron n.神經元，神經細胞(a grayish or reddish granular cell with specialized processes that is the fundamental functional unit of nervous tissue)

詞根記憶：neur(神經)+on(物)--神經元

例：Neurotransmitters are chemicals that carry nerve impulses from one neuron to the next.

派生詞：neuronal(a神經元的)

8.neutral a．中立的( not engaged on either side)

詞根記憶：neutr(中)+al--中間的;中立的

例：Switzerland remained neutral during World War l l.

派生詞：neutrality(n.中性;中立)

9.neutron n.中子

詞根記憶：neutr(中)+on(物)--中子

例：neutron star中子星（假想天體，主要是由高密度中子組成，具有強大的吸力）

同根詞：neutrino(n．中微子)