Subpopulation
n. (从其他人口分出或构成总人口的)分组人口
🗣️ 情景例句
Think nothing of it.
别放在心上。
Be considerate towards the poor.
要为穷人著想。
These days, advertisers not only offer free samples, but free cars, free houses, and free trips round the world as well.
目前，做广告的人不仅提供免费样品，而且还提供免费汽车，免费住房，免费周游世界。