Observation evidence
[经] 观察证据
🧩 词语组成解析
🗣️ 情景例句
I could tell something was up by the look on their faces.
我一看他们的脸色就知道有事。
I put some photographs in the envelope.
我在信里夹了几张照片。
Morning, Mr. Wu! I see you're on foot today.
早上好，吴先生！今天我看见您走路来的。