workable
adj
1 that will work2(3); practicable or feasible 行得通的; 切合实际的; 可行的
a workable compromise, plan, scheme 行得通的折衷办法、 计画、 方案.
2 that can be or is worth working (work2 5) 值得经营的
The silver mine is no longer workable, eg because it is flooded or because the ore is exhausted. 这个银矿不值得开采了(如因积水或矿石储量将尽).
No, we didn't fix anything. We thought we might go out, but we said we'd check with each other first. And now I'm telling you I can't manage this Friday. Another time, possibly, but not Friday.