Arcoscillator
电弧振荡器
🗣️ 情景例句
He had insufficient sleep.
他睡眼不足。
They must hunger in frost that will not work in heat.
少壮不努力，老大徒伤悲。
Then knowledge began to be accumulated according to a systematic plan.
于是，知识便开始有系统有计划地积累起来。