Billisecond
毫微秒(十亿分之一秒)
🗣️ 情景例句
Richard and I will put them into the envelopes.
我和Richard把它们放进信封。
Surely.
肯定是。
But it's true. I was the only person in my office who was invited. I've written to accept the invitation.
可这是真的。我们办公室只有我受到邀请。我已经写信表示接受邀请了。