他只有一次射门在门框内。

He had only one shot at goal.

《柯林斯英汉双解大词典》

他在一次练习课上扭伤了背部。

He strained his back during a practice session.

《柯林斯英汉双解大词典》

军队在一次特殊仪式上升了国旗。

Troops raised the country's colours in a special ceremony.

《柯林斯英汉双解大词典》

Please don't, if you are up here, become complacent because a month from now we will have another test.

如果你考得不错的话，请不要自满,因为在一个月后我们将还有一次测试。

麻省理工公开课 - 固态化学导论课程节选

who is on the streets in New York and she got mugged because she was walking alone at late at night,

她正在纽约的大街上走着。有一次她在夜间独自一人在街上走，遭遇了抢劫。

have to 课堂 - SpeakingMax英语口语达人

So now, the enzyme is locked up with being built, and the penicillin has effectively killed the bacteria.

所以这是我第一次感受到,我想在单个原子的层面上思考这些分子,所以这时我的专业转到了化学方向。

麻省理工公开课 - 化学原理课程节选