证件~ credentials are expired || 药物~. The medicine has lost its effectiveness efficacious, effective, (of a prediction) accurate effective, valid invalid, ineffective, in vain 
Wirksamkeit verlieren wirksam effektiv vergeblich 
perdere efficacia efficace Effettivamente invano 
perdre de l'efficacité efficace effectivement en vain 
perder la eficacia eficaz efectivamente en vano in Kraft treten 生效 außer Kraft, ungültig, unnütz 无效 wirkungsvoll, wirksam, gültig 有效 证件~ credentials are expired || 药物~. The medicine has lost its effectiveness 17 失效 [-] shīxiào (lose-function) lose efficacy, loose effectiveness: 证件~ credentials are expired || 药物~. The medicine has lost its effectiveness ' efficacious, effective, (of a prediction) accurate 8 灵验 [靈驗] língyàn (accurate-tested) efficacious, effective, (of a prediction) accurate: 这种药非常~. This medicine is highly efficacious. || 天气 预报 (yùbào) 果然~. The weather forecast turned out to be accurate. ' effective, valid 9 有效 [-] yǒuxiào (have-effect) effective, valid: 方法~. The way is effective. || 感冒 (gǎnmào) 药~. This flu drug is effective. || 这张车票三日内~. This rain ticket is valid for three days. ' invalid, ineffective, in vain 17 无效 [無-] wúxiào (no-effect) invalid, ineffective, in vain: ~劳动labor in vain || ~合同invalid contract || 抢救~ fail to save the life '
Giải pháp mới của chúng tôi là thực tiễn và hiệu quả. 
Our new solution is practical and effective.
Unsere neue Lösung ist praktisch und effektiv.
ทางออกใหม่ของเรามีความเป็นประโยชน์และมีประสิทธิภาพ
我们的新解决方案是实用和有效的。