选择器允许您提供两个目标，并指示新的目标在1月1日生效。

A selector allows you to provide two destinations and indicate that the new one takes effect on January 1.

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最后，右边的框可以用来选择元素，并指示图表上的元素是否已经被选中了。

Lastly, the box on the right is used both to select elements and to indicate whether elements on the diagram have been selected.

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当角色的服务得到请求时，这种行为可能会发生，并指示他们之间交流的信息。

This behavior says when the services of the roles are requested and may indicate the information exchanged between them.

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You might have also heard about the RISC complex, or the RNA silencing complex, and these are the biological mechanisms that are involved here and only shown by orange arrows on this slide.

你们也可能听说过RISC复合体,也叫RNA沉默复合体,幻灯片上给出了这些涉及的生物机理过程,并将它用橙色的箭头指示出来

耶鲁公开课 - 生物医学工程探索课程节选