| 单词 | 通常为木制 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔centering〕A temporary, usually wooden framework on which an arch, vault, or dome is supported during construction.定中心：在兴建拱门、拱顶或圆屋顶过程中所使用的暂时性支撑骨架，通常为木制美国传统〔tie〕One of the beams, usually made of wood, that are laid across a railroad bed to secure the rails.枕木：横放在铁路基上以固定铁轨的梁中的一根，通常为木制美国传统 |
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