英和和英

be in effect

（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

（契約なら）to take effect―become valid―（約束なら）―become binding―（法律なら）―become effective―come into effect―come into force―become operative

to take effect

（契約なら）to lose effect―become invalid―lose its validity―become null and void―（約束なら）―cease to be binding―（法律なら）―become ineffective―become void―go out of force―（切符なら）―become unavailable―cease to be available

（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

a large 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.

of a condition, effective

the act of improving efficiency

It is functioning

to be effective

of things, to continue to be effective

a lack of efficacy

of an effect, the state of being immediate

the quality of having legal force or effectiveness

the state of an effect being biased

Have functions

causally efficacious powers

the operative words

admit as valid

the condition of being ineffectual

capable of being put to good use

I have some business to attend to

The provision is still in effect.

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.

having a debilitating effect

prove valid

The demonstration made an impression.