1. Take as many as you need, but use them sparingly. ��Ҫ���پ��ö��٣������õ�ʱ��Ҫ�˷ѡ�
2. Apply flux to outside of tube and inside of solder cup. Surfaces to be joined must be completely covered. Use flux sparingly. �ڹܵ�����ͺ��Ӷ˿��ڲ�Ϳ�Ϻ�������Ҫ���ӵı��������ȫ���Ǻ�����Ҫ��Լʹ�ú�����
3. In my view, this is the single Golden Rule in dealing with the rich: time is the one thing they can't buy more of. Use it sparingly. ���ҿ��������Ǻ��˴���Ψһ�ƽ�����ʲô������Ǯ��ֻ��ʱ��������������ռ������ʱ���������Ҫ�����ʡ��