用: 40分钟跑完全程 run the course in 4 ...过: cross; pass的: 4次方是 The fourth power of 2 i ...钻头: boring crown; bore bit; dril ...用过的: outspent; second hand; secondhand; waste; we have a used computer for sale从未用过的: unused废的;用过的: outspent废水;用过的水: tail water废酸 用过的酸: spentacid刚使用过的: least recently used; leastrecentlyused未用过的: unused; virgin未用过的水: unused water未用过的油: unused oil用过的靶条: fired target用过的级: expended stage用过的空气: used air用过的口令: passwords used用过的球: used ball用过的燃料: spent fuel用过的热: used beat; used heat; usedbeat用过的溶剂: spent solvent用过的石灰: used lime用过的水: secondhand water; tail water用过的酸: spent acid用过的箱子: second-hand case