✅ 同义词
🗣️ 情景例句
But if we go out,
但是我们出去后，
I'm afraid I have bad news for you.
恐怕我有坏消息要告诉您。
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。