1. A South American bird that forages for winged termites and other small insects while swinging upside down form the foliage of tall trees. 一种南美洲的鸟，倒挂在高大的树上，觅食有翼的白蚁和其他小昆虫。
2. They're lenses because they're convex vessels, and when they're full of water, they act as a lens and you see the horizon in them, upside down and backwards. 它们是透镜，因为它们是凸面容器，当它们盛满水后，它们可作为透镜使用，你可以看到它们里面上下颠倒的地平线。
3. The painting was hung upside down. 这幅画挂颠倒了。
4. The canoe floated upside down on the lake. 独木舟底朝天漂浮在湖面上。
5. Every pill made my insides turn upside down. 每片药都使我的胃翻江倒海。
