dutiful (to one’s parents) ☊ 
Wimpel 
có kết quả có hiệu lực 
effective like: có hiếu → →
Wirkung zeigen ☊ 
có hiệu lực, có kết quả ☊ 
起作用 ☊ qǐ zuò yòng wirkungsvoll ☊ có kết quả, có hiệu lực ☊ 有效的 ☊ yǒu xiào de wirksam ☊ có hiệu quả ☊ 有效的 ☊ yǒuxiào de Wirkung zeigen ☊ có hiệu lực, có kết quả ☊ ☊ wirkungsvoll ☊ có kết quả, có hiệu lực ☊ ☊ wirksam ☊ có hiệu quả ☊ ☊ We can try that—but whether it'll work is another matter. ☊ another ☊
it is demonstrated that...: It has been demonstrated that this drug is effective. ☊ demonstrate ☊
I tried to persuade him, but with little or no effect. ☊ effect ☊
He only behaves like that for effect (= in order to impress people). ☊ effect ☊
New controls come into effect next month. ☊ come into effect ☊
drugs that are effective against cancer ☊ effective ☊
The company must reduce costs to compete effectively. ☊ effectively ☊
The new regulations are now in force. ☊ in force ☊
When do the new regulations come into force? ☊ come/enter into force ☊
For maximum effect do the exercises every day. ☊ maximum ☊
The offence carries a maximum prison sentence of ten years. ☊ maximum ☊
This special offer is valid until the end of the month. ☊ offer ☊
high-performance (= very powerful) cars ☊ performance ☊
The present regime has been in power for two years. ☊ power ☊
The experiment had the reverse effect to what was intended. ☊ reverse ☊
In order that training should be effective it must be planned systematically. ☊ should ☊
understand (sth): Can you understand French? ☊ understand ☊
Do you understand the instructions? ☊ understand ☊
Most of the students have a sound understanding of English grammar. ☊ understanding ☊