Iid
独立同分布[的]
🗣️ 情景例句
That'll be our first one,
这将成为我们的第一件，
John's parents will rejoice at his safe return.
约翰的双亲会因他的安然归来而惊喜万分。
but as a special favour, he would let me have it for $30.
作为特别优惠，他愿意让我出30英镑成交。