Question

愛新覚羅

下線部のwhileをどう扱ったらいいかわかりません

33 〈what S be>はT(い
つ
次の英文の下線部を訳しなさい
目
September dropped by nearly eighty as compared with the previo
September. This is very well so far as it goes, but the improvement
will probably not be kept up and meanwhile everyone. knows that
you can't solve the problem while our traffic system remains what
it is.
(駿河台大)

英文解釈の技術100