1. The universal selector, written "*", matches the name of any element type. It matches any single element in the document tree. 通用选择器，写作“*”，匹配任何元素类型的名称。匹配文档树中任何单个的元素。
2. Input Selector Switch. A switch used by cable customers to alternate between cable and over-the-air television reception through a cable box. 输入选择器开关。通过一个电缆盒，电缆用户使用这种开关在电缆和空中电视接收之间进行选择。
3. To cancel AE lock before releasing the shutter, press the previewAE lock button again or set the main switch selector to L (lock) to turn off the power. 如要在快门释放前取消自动曝光锁定，请再次按压预景深自动曝光锁定按钮，或把主选择开光调到L，以断开电源。
英英解释
n.
1. a person who chooses or selects out
2. a switch that is used to select among alternatives
