154.resident. n居民;
155.pesticide. c杀虫剂;
156.disease. n疾病;
157.woodland. n森林地;
158. exposure. n.暴露;
159.chemical. n化学药品;
160.poisoning. n.中毒;
161.pollution. n污染;
162.offi cial. n官员;
163 lifetime. n.一生;
164.nature. n本性;
165.threat. n威胁;
166.sign. c.迹象;v.签名;
167.label.n标签;
168.grocer. n 食品商、杂货店;
169.butcher. n屠夫;
170.baker. n面包师;
171.preservation. n保存;
172.technique. c技术;
173.marketing. n市场营销;
174.hardware. n。五金器具、硬件;software.n.软件;
175.globe. n地球;
176.tropics. n热带;
177. connection. n连接;
178. architecture. n建筑(学);
179.silicon. n.硅;
180.ancestor. n祖先/宗;