英和和英

effective

to be effective

become effective

effective breakthrough

an effective cutback

in an effective manner

（契約）a valid contract―（約束）―a binding promise―（法律）―an effective law―a law in force―（演説）―an effective speech―（切符）―an avail able ticket―a good ticket

to be efficient

handle effectively

the effective range

efficient

efficiency

the effective ruler

be in effect

efficient in one's actions

power to be effective

enabling power

effective and practical

with efficiency

an efficient incentive

powerful

a gain in efficiency

to reap the fruits―harvest the fruits―（of something）

producing a strong effect

excellent effect

causally efficacious powers

a telling gesture

with effect

a large effect

powerfully persuasive