Don't try to win a friend by presenting gifts。You should instead contribute your sincere love and learn how to win others 'heart through appropriate ways.
问题的数学表述通常比其解决方案更重要,后者可能仅仅是数学或实验技巧的问题。
水边的芦苇在夜晚披上寒霜,月色清冷,山色苍茫
天生犯罪人是其自身组织的受害者。