They must be initiated by some explicit user interaction (normally, by clicking an action link in a portlet), and they cannot be used to set up a coordinated view when first jumping to a page.
它们必须由某个显式的用户交互（通常是通过单击 Portlet 中的某个操作链接）发起，并且不能在第一次跳转到某个页面时将它们用于设置协作视图。
Among first-time travelers, solo travel is even more popular, jumping to 37 percent, up from 16 percent in 2013.
在首次出游的旅行者当中，单人旅行的风气甚至更盛，从2013年时的16%跃升至37%。
Running, jumping and other items of sports often lead to the injury to muscular cluster of back haunch, especially in such an item as sprint or hurdle, which has made up the first in flesh wound.
股后肌群损伤常见于跑、跳等项目，其中以短跑和跨栏发生率较高，占肌肉损伤的第一位。
应用推荐