automatic electronic timer
/ˌɔːtəmˈatɪk ɪlɛktɹˈɒnɪk ˈtaɪmə/
n
English · automatic electronic timer中文 · 自动电子计时器Español · cronómetro electrónico automáticoFrançais · chronomètre électronique automatique
意味：Apparatus for automatically registering the swimmer’s finish time; it is activated at the start and stops when the swimmer comes into contact with the wall.