"7 AM" is often abbreviated as "7am" in Engpsh.

The abbreviation comes from the 24-hour time format, where the hours are represented by two digits, with a colon separating the hours and minutes. To save space or for convenience, it is common to remove the colon and write "7am" instead of "7:00 AM."

Example sentences:

I need to wake up at 7am tomorrow for work.
The store opens at 9am and closes at 9pm.

中文翻译:

我明天早上7点需要醒来上班。
商店早上9点开门，晚上9点关门。