C-span
abbr. 有线卫星公众事务网络（Cable-Satellite Public Affairs Network）
🧩 词语组成解析
span
[spæn]
n. 共轭（马、骡）;跨度，墩距;一段时间;[航] 跨绳;
vt. 缚住或扎牢;跨越时间或空间;以掌测量;以手围绕测量类似测量;
🗣️ 情景例句
No. I really don't know how to go about it.
没有。我真不知道如何填。
I have no idea about it.
我一点都不知道。
but that was precisely the idea adopted in some of the early instruments (seismometers) for recording earthquake waves.
但是早期记录地震波的仪器（测震仪）正是采用了这种思路。