deficiency of both yin and yang

例句：

1. 1.The team's performance was a reflection of their training and equipment.
   团队的表现反映了他们的训练和装备。
2. 2. The teacher noticed the student's lack of attention during the test.
   老师注意到学生在考试中注意力不集中。
3. 3. The company's financial report revealed several areas of shortfall in its operations.
   公司的财务报告揭示了其运营中的几个短缺领域。