apply fertilizer rationally

例句：

1. 1.We should apply the principles of ecologyto our daily lives.
   我们应该将生态学的原则应用到日常生活中。
2. 2. The company applied fora loan to expand its production capacity.
   该公司申请了一笔贷款以扩大生产能力。
3. 3. Applying for a job is an important stepin the hiring process.
   申请工作是招聘过程中的一个重要步骤。