我们在山脊上搭帐篷过夜。

We set up our tent on the ___ridge for overnight camping.

她在窗帘边缘缝上了一条蕾丝花边。

She sewed a delicate ___trim along the edge of the curtain.

我们需要为这个系统安装一个新的机架。

We need to install a new ___rack for this system.