trackwheel

trackwheel

美 　英

• 网络滚轮；转动拨轮；拨弄黑莓手机的滑轮

例句

They tried to use the trackwheel as a way for a user to scroll through phone options and, without a keyboard, try to enter numbers.

他们尝试通过滚轮实现手机选项切换和数字输入，没有键盘。