台湾籍旅美老师今天交给我们的句子是：

Rainworks are pieces of street art that only appear when they're wet, and they're messages or images designed to make people's rainy day a little bit better.
雨天创作是只有在变湿时才会出现的街头艺术，它们是讯息或影像，设计的用意是让下雨天变得更美好。