1.fault n.过错(mistake)；【地】断层(a fracture in the crust of a planet)

词根记忆：fault本身为词根：错误

例：Henyey found that temperatures in drill holes near the fault were not as elevated as had been suspected.

2.feasible a．可做的，可实行的(capable of being done or carried out)

词根记忆：feas( =fac做)+ible--能做的--可实行的

例：Mass marketing remains the only economically feasible mode.

派生词：feasibility(n.可行性)

3.fecundity n．多产（prolific）；繁殖力(fertility, productiveness)

词根记忆：来自fecund(a．肥沃的)

例：A plant's fecundity decreases as the number of flowers produced by the plant decreases.

4.federal a.联邦（制）的，联邦政府的(of a system of government in which several states unite, usu. for foreign policy etc., but retain considerable control over their own internal affairs)

词根记忆：feder(联盟)+al一联邦（制）的

例：Few manufacturers have taken advantage of the changes in the federal tax laws.

派生词:federate(a．同盟的)；federation(门．同盟，联邦)

5.feign v.假装，伪装(to make a false show of, to pretend)

例：The hognose snake puts on an impressive bluff, hissing and rearing back, broadens the flesh behind its head the way a cobra does, feigning repeated strikes, but, having no dangerous fangs and no venom.

6.feminist n．女权主义者(a person who supports that women should have the same rights and opportunities as men)

词根记忆：femin（女人）+ist一女权主义者

例：western feminist theory西方女权说

同根词：feminine(a.女性的)

7.ferrous a．含铁的(containing iron)

词根记忆：ferr(铁)+ous--含铁的

8.fertility n．繁殖力(the birthrate of a population)；丰产(the quality or state of being fertile)

词根记忆：fer(带，生)+tility--带来新生命--繁殖力

例：fertiliity rates人口出生率//Venus is a goddess of fertdity and haNest.

同根词：fertilizer(n.肥料)；fertilization（n．受孕，受精）

9.fettilized a．已受精的(being made fertile)

词根记忆：来自fertilize(v.使受精)

例：fertilized eggs受精卵

10.fertilizer n．肥料，化肥(natural or artificial substance added to soil to make it more productive)

词根记忆：来自fertilize(v.使肥沃)

例：Research has shown that Tanco could reprocess the by-product of potassium chloride use to yield a crop fertilizer. leaving a relatively small volume of waste for disposal.