农业的可持续性不是一种选择,而是为后代必须做的事情。
水边的芦苇夜间结霜,月色寒冷与山色一同显得苍茫。
If you are not willing to learn, no one can help you. If you are determined to learn, no one can stop you.
A computer program does what you tell it to do, not what you want it to do.