effective 有效的
efficient 高效的
ef·fec·tive
–adjective
1.adequate to accomplish a purpose; producing the intended or expected result:effective teaching methods; effective steps toward peace.
2.actually in operation or in force; functioning:The law becomes effective at midnight.
3.producing a deep or vivid impression; striking:an effective photograph.
4.prepared and available for service,esp.military service.
–noun 5.a member of the armed forces fit for duty or active service.
6.the effective total of a military force.
ef·fi·cient
–adjective
1.performing or functioning in the best possible manner with the least waste of time and effort; having and using requisite knowledge,skill,and industry; competent; capable:a reliable,efficient secretary.
2.satisfactory and economical to use:Our new air conditioner is more efficient than our old one.
3.producing an effect,as a cause; causative.
4.utilizing a particular commodity or product with maximum efficiency (usually used in combination):a fuel-efficient engine.
