1570s, "above value," from in- (1) "not" + value (v.) "estimate the worth of" + -able. It also has been used in a sense "without value, worthless" (1630s).
实用例句
1. The research should prove invaluable in the study of linguistics.
该调查研究在语言学研究领域的重要性应该会得到证实。来自柯林斯例句
2. The book is an invaluable aid to teachers of literature.
这本书对于教授文学的老师来说帮助非常大。来自柯林斯例句
3. I was able to gain invaluable experience over that year.
在那一年里我有幸获得了非常宝贵的经验。来自柯林斯例句
4. Breast self-examination is invaluable for detecting cancer in its very early stages.
**自检对早期癌症的发现是极为重要的。来自柯林斯例句
5. The video has become an invaluable teaching tool.
