Null detection
[计] 零检测
🧩 词语组成解析
🗣️ 情景例句
Yes, he missed a phone call from Alexandra.
对 他没接到Alexandra打来的电话。
A sow, when washed; returns to the muck.
江山易改，本性难移。
Later we learnt that there was a very important person on board.
后来我们才得知，飞机上坐了一位非常重要的人物。