I anticipate his arrival at four o 'clock.

我期待他4点钟到达。

《新英汉大辞典》

We have tea at four o 'clock in the afternoon.

我们在下午四点钟喝茶。

youdao

He asked me to call for him at four o 'clock in the afternoon.

他要我下午四点钟来接他。

youdao

It's four o'clock in the morning and the 68-year-old fisherman is dragging a plastic trunk of fish carcasses across the dock toward his boat.

VOA: standard.2010.07.20

Then, at four o'clock in the afternoon, twenty-four hours after the mortar fell on his friends and neighbors while they waited to buy bread, he will bend down and pick up his bow.

NPR: Excerpt: 'The Cellist Of Sarajevo'