2. The EU presidency rotates among the members. 欧盟主席一职由其成员国轮流担任。
3. As the wheel rotates, the gondolas are kept in the upright position by a simple gearing system. 当车轮转动时,贡多拉通过一个简单的传动系统保持在垂直位置。
4. Carousels are essentially slideshow navigations, in which the content rotates vertically or horizontally (hence the name "carousel"). 旋转木马本质上是幻灯片导航,其中的内容垂直或水平旋转(因此得名“旋转木马”)。