overprep.在 ... 的上方；遍及地；在 ... 期间adv.穿过；完全覆盖；结束；落下n.(板球中)每个投球手一次连续所投出的球数overstepv.超过（正常或容许的范围）；〈法〉违犯

1. There is no way to cover a short position.
   没法子再补进空头了。
2. Parties who have sold a futures contract are said to have taken a short position.
   出售期货合约的出售者被认为是处在市场空头。