生效: come into force [operation]; go into effect; become effective; take effect; enter into force 短语和例子签字后立即生效 become effective immediately upon signature; 自签字之日起生效 go into effect from the date
开始生效: become effectivebring into forcego into effect / enter into forcego into forcego yinto effect/enter into forcetake into effectto come into effectto go into effect
