Precontamination
初期污染
🗣️ 情景例句
Do you have any coupons?
你们有优惠卡吗？
We'd love to have you.
我们很想邀请您。
She always referred to them as 'the shifting population', for they came and went with such frequency that I never even got a chance to learn their names.
她称这些佣人叫“流动人口”，因为他们来匆匆，所以我甚至都没有机会知道他们的姓名。