Optical detection
[计] 光检测
🧩 词语组成解析
🗣️ 情景例句
often took us somewhere in the city on the weekends.
经常在周末带我们去城市的一些地方。
If the ox falls,whet your knife.
牛一倒，快磨刀；人遭难，众人踩。
Some cakes, please.
吃几块蛋糕吧。