Effective electromotive force
[電] 有效電勢(shì)
?? 詞語(yǔ)組成解析
effective
[?'f?kt?v]
adj. 有效的;起作用的;實(shí)際的，實(shí)在的;給人深刻印象;
n. [軍]現(xiàn)役兵額，有生力量，精兵;
ef出+fect做，制作 +ive形容詞后綴 →做出來的 → 有效的
a. 電動(dòng)的\\n[醫(yī)] 電動(dòng)的
force
[f?:s]
n. 力;武力;（社會(huì)）勢(shì)力;魄力;
vt. 強(qiáng)迫;強(qiáng)行;促使，推動(dòng);強(qiáng)奸;
??? 情景例句
Yes. The number, please,of the Staten Island Ferry lost-and-found office.
我想問一下Staten島渡輪失物招領(lǐng)處的電話號(hào)碼。
Idle people (folks) have the most labour (take the most pains).
懶人做工作，越懶越費(fèi)力。
No, more, about 130 years ago. Most of the slave owners were rich farmers who lived in the south. They wanted to keep their slaves.
不，還要早，大約130年前。大多數(shù)奴隸主都是住在南方的富有的農(nóng)場(chǎng)主。他們想保留自己的奴隸。