| 单词 | trackball |
| 释义 | trackball (once / 268621 pages) n WORD FAMILY trackball: trackballs USAGE EXAMPLESIn one experiment, the robot exposed a fly running on a tiny trackball to different odors as the researchers recorded its changing path. New York Times(May 27, 2015) First, they placed the roach on a trackball, where it couldn’t navigate with its mouthpart or antennae. Science Magazine(Dec 03, 2014) The computer security expert next to me showed me how to use the BB trackball, while General Alexander teased. Forbes(Aug 22, 2013) n an electronic device consisting of a rotatable ball in a housing; used to position the cursor and move images on a computer screen a trackball is essentially an upside-down mouse Hyper electronic device a device that accomplishes its purpose electronically |
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