Absence test
[计] 缺席测试, 存在与否测试
🧩 词语组成解析
🗣️ 情景例句
Keep right.
保持右方向。
Have you heard the weather forecast?
你听天气预报了吗？
A short time before, great trees had covered the countryside for miles around.
就在不久之前，参天大树还覆盖着方圆数英里的土地。