You have to have, because " number crunchers" are people who work with numbers a lot, finance people.
你必须拥有,因为“数字处理者” 是经常处理数字的人, 财务人员。
CNN 听力 2014年5月合集
If you have any ground been in your freezer that says 2574B, that's the lot number that's of concern. You want to throw that out. Don't take any chances.
A lot number is an identification number assigned to a particular quantity or lot of material from a single manufacturer. Lot numbers can typically be found on the outside of packaging. For cars, a lot number is combined with a serial number to form the Vehicle Identification Number.