During the Cold War, Eastern European countries developed at a rate that lagged far behind that of Western European countries.

冷战期间，东欧国家的发展速度远慢于西欧国家。

The restructuring of the pattern of consumption also lagged behind.

消费结构的调整也落后了。

I'm still a little jet-lagged.

我还是有一点时差反应。

The little boy lagged behind his parents.

那小男孩落在了父母的后面。

He was also playful — those blue eyes may have been jet-lagged, but they still managed to twinkle and exceedingly polite.

他还是很好玩的——虽然也许由于飞机时差的缘故，那双蓝眼睛没那么有神彩，但依然闪亮且非常彬彬有礼。

He's lagged behind in his studies.

他功课退步了。