变为无效

【法】 neutralization

变的英语翻译：

become; change
【医】 meta-; pecilo-; poecil-; poikilo-

为的英语翻译：

act; become; do; for; for the sake of; in order to; mean; serve as

无效的英语翻译：

be of no effect; invalidity; impotence; inefficacy; nullification; nullity
【计】 IDL; ineffectiveness
【医】 inefficacy
【经】 inefficiency; null and void