starting pistolˈstɑːtɪŋpɪstl短语¹⁴⁴⁹⁷²⁺² 基本例句 发令枪 When the starting pistol fires, sprinters launch into the race with a burst of acceleration. That initial velocity depends, in part, on the length of their toes. 当发令枪响起，短跑运动员就会立即进行起跑加速，而他们获得的初速度很大部分取决于他们脚趾的长度。 yeeyan