Two roads diverged in a wood, and I—I took the one less traveled by, And that has made all the difference.
树林里分出两条路，而我选择了人迹罕至的那条，这决定了一切。
农民兴旺，社区繁荣；农业挣扎，社会痛苦。
数学语言是通用的；它超越了所有文化障碍。