valuable
adj
1 worth a lot of money 贵重的; 值钱的
a valuable collection of paintings 一批很有价值的画儿.
2 very useful or worthwhile or important 很有用的; 很有价值的; 很重要的
valuable advice, help, information, etc 宝贵的意见、 帮助、 信息等
wasting valuable time and effort 浪费宝贵的时间和精力
The jawbone was our most valuable find/discovery. 这块颌骨是我们最重要的发现. =>Usage at invaluable 用法见 invaluable.