These are the planks of his model, that matter is composed of atoms that are indivisible and indestructible.

这些是，他的模型的一些内容，物质是有原子组成的,不可分割且不可毁灭的。

麻省理工公开课 - 固态化学导论课程节选

It's on a low bridge near the water, solid wood planks, nice and wide, hand railings made out of solid wood, and you can cross the bridge that way.

另外一座桥离水面近，实木板材质的，又结实又宽，扶手,也是实木材做的，通过这座桥也可以过河。

耶鲁公开课 - 心理学导论课程节选