между тем(But something important has changed in the intervening time, leaving the impression that the day of Mr. Putin's first announcement, Sept. 24, will be the dividing line between two distinct periods in Russian political life. NYT Alexander Demidov)
за эти годы(Little had changed in the intervening years. OALD. I hadn't seen him since 1980, and he had aged a lot in the intervening years. LDCE Alexander Demidov)