1.(落在后面) fall behind; lag behind 短语和例子 落后于时代 behind the times; 谦虚谨慎, 永不落后 ! be modest and prudent, never lag behind! 我的思想老落后于现实。 my thinking always lags behind reality. 上半场主队落后一分。 the home team trailed by one point at half time.2.(不先进) backward 短语和例子 技术落后 backward in technique; 改变山区落后面貌 put an end to the backwardness of the mountainous areas; 落后窗 lag window; 落后地区 backward areas; less developed areas; 落后分子 backward element; 落后角 deviation angle; lag angle; 落后特性 lag characteristic