railroad tie

音标发音

the British call a railroad tie a sleeper.
铁路枕木为什么是黑色的。
My stomach dropped when I saw some houses reduced to the railroad ties that had been their foundation.
原来盖在铁路路基上的房屋被大水冲走，又露出了路基。看到这种情况，我的心情陡然沉重起来。
East Indian tree whose leaves are used for fodder; yields a compact dark brown durable timber used in shipbuilding and making railroad ties.
东印度的一种树，叶子可作饲料；出产一种深褐色的结实的经久耐用的木材，可用于造船和制造铁路枕木。
After making their way through the trees, they clambered to the top of the steep roadbed, knelt down along the railroad ties and began to play.
他们穿过树林，攀爬到陡峭的路基上面，跪在铁轨枕木边上玩耍。
Handsome East Indian evergreen tree often planted as an ornamental for its fragrant white flowers that yield a perfume,source of very heavy hardwood used for railroad ties.
一种美观的东印度常绿树，因其可产香水的芳香白花，而通常作为观赏植物被种植，其木材坚硬、沉实，用作铁路枕木。