Although we hadn't met for 25 years, I recognized him the minute I saw him.
尽管我们有25年未见面了,我一看见他就认出来了。
Don't tell anyone that I did it.
别说是我做的。
Up to now, historians have assumed that calendars came into being with the advent of agriculture, for then man was faced with a real need to understand something about the seasons.