a surveyor's mark on a permanent object of predetermined position and elevation used as a reference point
a standard by which something can be measured or judged
bench-mark的用法和样例:
例句
Whether it was Leon Powe's 21 points in Game 2 or James Posey's 18 points in Game 4, the Celtics bench may have been the reason they won the series as handily as they did. 许多专家和学者预测湖人会赢得和凯尔特人的系列赛的一个主要原因就是湖人的板凳深度要更雄厚,但是凯尔特人的替补的表现超出人们的预期水准。