long-tested; having stood the test of time; proven reliable through extensive experience
这位老工程师的技术是久经考验的，可以放心信任。
The technique of this veteran engineer is long-tested; you can trust it with confidence.
Era:
Modern
Frequency:
Next Idiom
long-tested; having stood the test of time; proven reliable through extensive experience
Era:
Modern
Frequency: