Effective traction
[化] 有效牽引力
?? 詞語組成解析
effective
[?'f?kt?v]
adj. 有效的;起作用的;實際的，實在的;給人深刻印象;
n. [軍]現役兵額，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
traction
['tr?k??n]
n. 拖拉;牽引力;附著摩擦力;
??? 情景例句
How many people will you be bringing?
你約了多少人來？
He that would the daughter win, must with the mother first begin.
欲得女兒歡，先遂其母意。
There are twenty-four boys, and twenty-two girls.
二十四個男生，二十二個女生。