effort力气，精力，努力

affect影响，改变，感动

effect结果，效果，影响

worker

ampersand &号

asterrisk *号

deal

difficulty

lose

magic

proprientary专卖的，所有权

property

vowel元音

bowel大肠

traditional

synchronization

fragment碎片

primary

habit习惯

comprise由...组成，包含

landler兰德勒舞曲

absence没有，缺乏

seldom几乎不

hardly

rarely

scarely

barely

few

little

unfortunately

expunge抹去，删去

invent发明，创造

invite邀请

eclipse丧失，黯然失色

ellipse椭圆

undone

unshift不位移

shift移动

greatly

cost

degrade贬低，侮辱，降级，退化

upgrade

suggestion

real

experimentation

solely单独的，只，仅

lonely

announce

squeeze挤出，削减，挤压

negate

father

reinstate使恢复原状

instate任命

tutorial教程，辅导材料

tutor家教

tourist游客

nicety精确，准确，细节

exponent指数，拥护者

opponent反对者

exponential指数的，越来越快的

prefer

reactivate使恢复活动