1·We had kept its presence hidden with a strategically placed chair.
我们用一把巧妙放置的椅子把它隐藏起来。
—— 《柯林斯英汉双解大词典》
2·Telescopes need to be placed in the best possible spot.
望远镜需要放置在最佳的观测点。
3·They may look kind of randomly placed, but they actually form many distinct patterns.
可能它们看起来是随机放置的，但实际上它们形成了许多不同的样式。
4·This technique makes use of a small flexible mirror placed in the beam of a telescope.
这项技术利用了放置在望远镜光束上的一个小的可弯曲的镜子。
5·Big Ben's timekeeping is strictly regulated by a stack of coins placed on the huge pendulum.
大本钟的计时是由放置在巨型钟摆上的一堆硬币严格调节的。