She has been working hard day and night, which of course, accounts for her pale face.

她夜以继日地努力工作，这当然是她脸色苍白的原因。

youdao

Of course we want to go back some day—it's our country, our real home.

我们当然希望有一天能回去—那是我们的祖国，我们真正的家。

《牛津词典》

A new antibiotic requires only a three-day course of treatment.

一种新的抗生素只需要三天疗程。

youdao

At the end of the day, the choice to continue as a destitute, international pariah or chart a new course is North Korea's alone to make.

VOA: standard.2009.05.30

I of course picked the wrong day to wear a sweatshirt under really hot lights so thankfully I came prepared with another item from the-- from the store.

当然，我在主光灯下穿了件运动衫，这确实不太明智,幸好我过来时,从商店准备了另一件。

哈佛公开课 - 计算机科学课程节选

to get a view all over the city, on a clear day, of course.

俯瞰整个城市，当然这要在一个晴朗的日子。

神奇的博物馆 - SpeakingMax英语口语达人

Turns out most of the folks on the course that day were volunteers and they all had drinking passes.

FORBES: Longread: Confessions of a Senior PGA Championship Mobile Cart Operator

Here's a baseball announcer saying they saw Clemens at a golf course the day he was suppose to be at Conseco's.

NPR: Clemens Grilled on Capitol Hill

But in February, it opened one course all day to uphill skiers while unveiling a new facility that offers uphill lessons and uphill-specific equipment.

WSJ: Ski Mountaineering: Now They're Racing Up the Hill