例句與造句

1. The next test was more complex , requiring all to scan sequences of 20 identical letters and respond the instant one of the letters transformed into a different one
   第二項(xiàng)測(cè)試更加復(fù)雜，要求所有受試者瀏覽由20個(gè)字母組成的若干字母串，并且對(duì)變換的字母立即做出反應(yīng)。
2. It's difficult to find identical letters in a sentence. 用identical letters造句挺難的