Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.努力过，失败过，没关系，屡战屡败，屡败屡战，每一次失败都比上一次更好。"Ah, Captain Fox," Martin McGuinness said affably. "Nice to see you again."“啊，福克斯上尉，”马丁·麦吉尼斯亲切地说，“很高兴再次见到您。”Northb...
碳元素年代测定法给考古学家提供了基本的年代框架.Carbon dating provides the archaeologist with a basic chronological framework.蝙蝠用一种回声测定法来判断距离.The bat judges distances by a kind of echo - location.要求用直接测定法校正间接测定法.A direct means is required to ca...