Pis
abbr. 产品形象系统（Product impression system）；菲律宾群岛（Philippine Islands）
🗣️ 情景例句
How does she get by on such a small salary?
她靠那么一点薪水怎么过生活？
In college I majored in philosophy, What was your major?
大学时我主修哲学，你主修什么呢？
For one thing they keep the water clean.
一来，水下植物可以保持水的清洁。