Saticon
塞蒂康视象管, 硒砷碲视象管
🗣️ 情景例句
Monday morning.
星期一早晨。
An idle youth,a needy age.
少壮不努力，老大徒伤悲。
The young man did not wake up until the bed had struck the ground.
那年轻人直到床撞到地上才醒了过来。