Therefore it pings those hosts in a ( configurable ) time interval.
它可以按照用户指定的间隔 监测主机 .
The boy pings a knife against a glass.
小男孩用刀碰着玻璃杯发出丁当声.
Most impressively, by rasping their penises against their abdomens, moths generate ultrasonic pulses similar to the echolocation pings bats use to hone in on prey.
他们不仅能把带刺的倒钩绑在腿上,还是个卓越的飞行员。更令人震撼的是,通过生殖器与腹部的摩擦,飞蛾能够发出超声波脉冲。这种超声波脉冲和蝙蝠的回声定位的脉冲差不多,不过,蝙蝠更多用它来捕食。
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