learning efficiency的用法和樣例：
例句
- The little boy is always absent-minded in class, not to say his study efficiency after class.
這個(gè)小男孩在課上總是心不在焉，更不要說(shuō)他課后的學(xué)習效率了。 - The experiment shows that autonomous class teaching activities can not only develop the potential of learners' autonomy, but also improve their learning efficiency.
實(shí)驗結果表明自主式課堂教學(xué)活動(dòng)不僅能開(kāi)發(fā)學(xué)習者學(xué)習自主性的潛能，還能提高他們的學(xué)習效率。
