Surface water that flows off land after rain or irrigation.

降雨或灌溉后从地表流走的水。

Pollutants or dissolved materials carried away by such surface flow.

随此类径流被带走的污染物或溶解物质。

An extra round to break a tie in a competition.

为打破比赛平局而进行的加赛。

A second election round held when no candidate wins outright.

在无人直接获胜时举行的第二轮选举。