section of sufficient grade

例句：

1. 1. The company has a section for new hires.
   该公司有一个新员工专区。
2. 2. The team divided the work into sections.
   团队将工作分成了若干个部分。
3. 3. The teacher explained the concept of section in detail.
   老师详细解释了“部分”这个概念。