Afdet
[计] 故障自动检测
🗣️ 情景例句
Yes. About four years ago.
是的 ，大约四年前走的。
He is attending a morning intensive course four hours a day, six days a week.
他每周六早晨都上一门4小时的速成课。
The village no longer existed because it had been submerged, and all the valley too.
村庄已不复存在，因为已经为水所淹，山谷也被水淹没了。