▲ripple: 本义是指 a small low wave on the surface of a liquid（波纹，细浪，涟漪），也可引申指类似“波纹，涟漪”一样的东西。如：

A ripple of unease passed through her. 一阵不安在她心头掠过。

He felt a small ripple of fear pass through him. 他感到一阵恐惧感传遍全身。

There was a ripple of applause for the speaker. 演讲者博得了此起彼伏的掌声。

A ripple of laughter ran round the room. 房间里四处响起此起彼伏的笑声。

His remarks sent a ripple of laughter through the audience. 他的话激起了观众的一阵笑声。

She threw a stone into the pond and watched the ripples spread. 她把一块石头扔进池塘里，看着水的波纹扩散开。

I dropped the pebble in the water, sending ripples across the pond. 我往水里扔了一块鹅卵石，池塘里泛起了阵阵小波纹。

▲fabric: 本义是 the structure or parts especially of a social unit or a building，即指社会或建筑物的“结构，构造”。如：

the fabric of society 社会结构

Unhappiness was woven into the natural fabric of people's lives. 苦恼忧愁原是人们日常生活的一部分。

We must invest in the fabric of our hospitals and start rebuilding them. 我们必须对医院建筑进行投资并开始重建工作。

在本句中，the fabric of space-time 与我们平常说的“时空隧道”意思相近。

▲句子大意：

今天科学家宣布了一条人惊的消息：人们在时空隧道中首次观察到了一阵阵被称为引力波的东西。