effective, valid feasible, practical 
effektiv effektiv 
Effettivamente Effettivamente 
effectivement effectivement 
efectivamente efectivamente 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. ' feasible, practical 7 切实 [-實] qièshí (correspond to-fact) feasible, practical: ~的行动feasible action || ~解决问题solve the problem in real earnest || ~可行的计划 feasible plans '
Cô thấy rằng thực sự có một người đàn ông ngay sau cô. Hơn nữa, anh ấy đang quan sát cô ấy kỳ lạ. 
She saw that there was indeed a man immediately behind her. Moreover, he was observing her strangely.
Sie sah, dass hinter ihr tatsächlich ein Mann war. Außerdem beobachtete er sie seltsam.
เธอเห็นว่ามีชายคนหนึ่งอยู่ข้างหลังเธอ นอกจากนี้เขากำลังเฝ้าดูเธอแปลก ๆ
她看到身后立刻有一个男人。而且，他奇怪地观察着她。