名词
中文翻译：次要的支柱
同义词：
['subordinate pole', 'secondary member']
例句：
-
1.The main beam of the bridge is made of steel, while the secondary poles are made of wood.
这座桥的主梁是用钢制成的，而次要的杆件是用木头做的。
-
2. The carpenter used a secondary pole to support the roof.
木匠用一根次要的杆件来支撑屋顶。
-
3.The secondary poles were designed to be more flexible than the main ones.
次要的杆件被设计得比主要杆件更灵活。