Probed
v. 探索, 用探针（或探测器等）探查, 探测( probe的过去式和过去分词 ); 盘问; （用试探性袭击等）侦察（敌情）; 用尖物刺穿（物件）
🗣️ 情景例句
and how hard it is
他还说这件事很难
Thoroughly to teach another is the best way to learn for yourself.
教学相长。
namely 6 million million miles.) Radio waves also travel at the speed of light,
即6万亿英里）。无线电波也是以光速传播的。