I was overcome by a sense of failure.一种失败感将我击垮。

The night before the test I was overcome by fear and despair.考试前的晚上, 恐惧和绝望让我内心无比惊慌。

The residents were trying to escape from the fire but were overcome by smoke.居民试图逃出火海, 却被烟雾熏倒在地。