Have sb's number
对某人的能力心中有数
🧩 词语组成解析
have
[hæv]
aux. 用以构成完成式及完成式的不定式，表示已经…;
vt. 有，具有;拿，取得;从事;必须，不得不;
n. 〈口〉有产者，有钱人;富国;〈英俚〉欺骗，诈骗;
have=possess持有 → 有
🗣️ 情景例句
You graduated from engineering school.
你是从工学院毕业的。
Fortune knocks once at least at every man's door.
人人都有鸿运高照之日。
While two detectives were keeping guard at the door, two others opened the parcel.
这时两个侦探把住门口，另外两个侦探打开了包裹。