“数一数二”，汉语成语，字面意思是"不算第一也算第二"，形容突出、出类拔萃。可以翻译为“rank very high among”,"count among the best"或“count at the top”。

例句：

他被认为是本世纪数一数二的舞蹈家。

He is usually counted among the greatest dancers of the century.

工人们认为他是数一数二的焊工。

The workers reckon him as the best welder.