1.membrane n.薄膜，细胞膜(cell membrane)

例：In pterosaurs(翼龙),a greatly elongated fourth finger of each forelimb supported a winglike membrane.

2.memoir n.回忆录(a written remembrance)

词根记忆：memo(记忆)+ir--回忆录

例：The former president wrote his memoirs shortly before he died.

3.memorandum n.备忘录(a written reminder)；便笺(an informal written note of a transaction or proposed instrument)

词根记忆：来自memo(n．备忘录)

例：The following appeared as part of a company memorandum.

同根词：memorial(n.纪念碑)；commemorate(v.纪念)

4.merchandise v.买卖，销售(to sell sth. using advertising, etc.);经商；n.商品(commodities)

词根记忆：来自merchant(n.商人)

例：Most merchandise orders placed in response to advertisements in Systems last year were placed by Systems subscribers over age thirty-five.

派生词：merchandiser(n.商人)

同根词：mercantile(n.商品：a.商业的)

5.merchant n.商人(businessman)

词根记忆：merc(贸易，商业)+h+ant--商人

例：A merchant discounted the sale price of a coat and the sale price of a sweater.

同根词：merchandise(n.商品，货物)

6.merge v.合并(to become combined into one)；使合并(to cause to combine, unite，or coalesce)；吞没(to plunge or engulf in sth.)

词根记忆：merg(沆没)+e --吞没

例：The two oil companies agreed to merge their refining and marketing operations in the Midwest and the West, forming a new company that would control nearly fifteen percent of the nation's gasoline sales.

派生词：mergence(n.合并)

7.merger n.（企业等的）合并(absorption by a corporation of one or more others);并购(the act or process of merging)

词根记忆：来自merge(v.合并；融合)

例：Not one of the potential investors is expected to make an offer to buy First Interstate Bank until a merger agreement is signed that includes a provision for penalties if the deal were not to be concluded.

8.metabolic a．新陈代谢的(of, relating to, or resulting from metabolism)

词根记忆：来自metaboly (n.新陈代谢)

例：Plants with the highest metabolic efficiency in a given habitat tend to exclude other plants.

同根词：metabolism（n．新陈代谢，代谢作用）；metabolize [v.（使）产生代谢变化]

9.metabolism n.新陈代谢

词根记忆：来自metabolize(v.使新陈代谢)

例：Some scientists contend that many species of dinosaur had a metabolism more like a warm-blooded mammal's than a cold-blooded reptile's.