To get it right, you will need to know the average date of the first frost in your area.

为了做到这一点，你需要知道你所在地区往年综合来看第一场霜冻的大致日期。

Narrator: This allowed her to filet and flatten the dates, as she noticed that roaches are typically flatter than that of average dates.

旁白：这让她可以将椰枣切成薄片并压扁，因为她注意到蟑螂通常比普通椰枣更扁。

The average date of sowing is about July 1st. If this date is simply moved up fifteen or twenty days, 30,000 to 60,000 tons of cotton is gained, depending on the year.

播种的日子一般是在7月1日左右，单把这个日子提前15到20天，就可以收获30000至60000吨棉花，这要看年景的好坏。