hurdled ore 粗筛矿石
N-COUNT A hurdle is a problem, difficulty, or part of a process that may prevent you from achieving something. 障碍; 困难
Two-thirds of candidates fail at this first hurdle and are sent home.
2/3的候选人未能通过这第一关,被打发回家了。
N-COUNT-COLL Hurdles is a race in which people have to jump over a number of obstacles that are also called hurdles. You can use hurdles to refer to one or more races. 跨栏赛跑
Davis won the 400 metre hurdles in a new Olympic time of 49.3 sec.
戴维斯以49.3秒这一新的奥运会记录在400米跨栏赛跑中夺冠。
V-T/V-I If you hurdle, you jump over something while you are running. (奔跑中) 跨越
He crossed the lawn and hurdled the short fence.
他穿过草坪,越过低矮的栅栏。
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