- 現有大量關於第一次世界大戰的文獻。
There is now extensive literature dealing with the First World War.
- 第一次測量聲速是在什麼時候?
When did the first measurement of the speed of sound take?
- 你第一次猜得對。
Your first surmise was right.
- 我與她的第一次會面的情景經常出現在我的記憶中。
My first meeting with her often recurs to my memory.
- 這是她第一次懷孕。
This is her first pregnancy.
- 不久以後,他第一次就這一事件發表了公開聲明。
Soon afterwards he made his first public statement about the affair.
- 如果我沒記錯的話,我們第一次相遇是在紐約。
We first met in New York, if my memory serves me.
- 在第一次世界大戰中,我祖父駐守在法國北部前線。
Grandfather was in the trenches during the First War.