The couple chatted briefly on the doorstep before going inside.

夫妇俩进屋前在门阶上简单地聊了几句。

《柯林斯英汉双解大词典》

Mrs. Pollard decided to learn as much as possible about the country before going there.

波拉德夫人决定尽可能多地了解那个国家后再去那儿。

《柯林斯英汉双解大词典》

I washed and changed before going out.

我洗了个澡，换好衣服，然后才出去。

《牛津词典》

She worked in a Tibetan refugee camp in India before going to Thailand to help Burmese refugees.

VOA: special.2010.05.03

At this point, we have no other choice but to double up before going to the next energy level, 2px so we'll put a second one in the 2 p x.

在这点上我们没有其他选择,而只有双倍填充,在到下一个能级之前，所以我们放入第二个电子至。

麻省理工公开课 - 化学原理课程节选

About 25% to 30% of our students are younger students who are just out of college and are looking to immerse themselves in positive psychology before going on into their professional training.

5%到30%的学生是年青人,刚刚大学毕业,希望在进行职业训练之前,先深入学习积极心理学。

哈佛公开课 - 幸福课课程节选

The home side had already threatened through Raul Meireles's miscued sixth-minute shot before going ahead in the 10th.

BBC: Liverpool 3-0 Newcastle

The 22-year-old Mr. Markoff maintained his innocence but hanged himself before going to trial.

WSJ: Toll of Alleged Online Plot May Rise to Three

When people fly west, they have to stay up later before going to bed.

WSJ: To Avoid Jet Lag This Summer, Travel Like a Scientist