英和和英

（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

an effect

be in effect

be in effect

（法律なら）A law comes into effect―comes into force―becomes effective―becomes operative―（契約などなら）―A contract becomes valid―takes effect.

It is functioning

（契約）―an invalid contract―（約束）―a promise of no force―（法律）―an invalid law―an ineffective law―（演説）―an ineffective speech―（切符）―an unavailable ticket―a bad ticket

to be effective

of a condition, effective

acted upon

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

to expatiate on the virtues

the act of improving efficiency

a lack of efficacy

Have functions

Has an effect

Utilities & Utilities Summary

excellent effect

of an effect, the state of being immediate

the toxin's potency

an active ingredient

heighten an effect

producing an effect

I have some business to attend to

the arch effect

producing a strong effect

the state of an effect being biased

admit as valid

capable of being put to good use

A contract becomes invalid―loses its validity―loses effect―An agreement becomes null―A law becomes void―goes out of force―A right lapses―A ticket is not available.