根据古老的希伯来传统，一个欧莫尔大约是两升干粮的容量。

According to ancient Hebrew tradition, one ___omer was roughly equal to two liters of dry grain.

在逾越节和五旬节之间，犹太人会每天数算omer的49天。

Between Passover and Shavuot, Jews count each of the 49 days of the ___omer.