Noun:

1. a piece of furniture made up of sections that can be arranged individually or together

Adjective:

1. relating to or based upon a section (i.e. as if cut through by an intersecting plane);

   "a sectional view"
   "sectional drawings"
   

2. consisting of or divided into sections;

   "a sectional sofa"
   "sectioned plates"
   

3. related or limited to a distinct region or subdivision of a territory or community or group of people;

   "sectional tensions arose over slavery"
   

surroundingadj.周围的n.环境；周围的事物

halfn.一半；下半场；半学年adj.一半的；不完全的adv.一半地；不完全地

provincialadj.省的；地方的；偏狭的n.乡下人；地方人民

sectionedn.部分；部门；章节；区域；断面；剖面图；零件；路段；切开v.划分；切开

1. Only a few sectional shapes are sensitive to this condition.
   只有少数断面形状对这种情况是敏感的。