爱因斯坦惊恐地发现，希尔伯特把他从爱因斯坦的讲座中学到的东西都拿来了，而且还在争先恐后地首先提出正确的方程式。

Einstein discovered to his horror that Hilbert had taken what he had learned from Einstein's lectures and was racing to come up with the correct equations first.

youdao

如果一名毒贩朝我射击，我会毫不犹豫地首先向他开枪。

If a drug trafficker is going to shoot me, I won't hesitate in shooting him first.

youdao

首先把地耙平。

First rake the soil smooth.

《牛津词典》

Okay. First of all, let's look at the simile that compares Satan's shield to the moon.

首先，我们来看看这些将,撒旦的庇护地比作了月亮的明喻。

耶鲁公开课 - 弥尔顿课程节选

First Socrates' manner of teaching ? is markedly different from the poets right?

首先，苏格拉底的教学法,明显地不同于诗人，对吗？

耶鲁公开课 - 政治哲学导论课程节选

First of all,notice the obvious point that sometimes people die in their sleep,unexpectedly.

首先，有时人是在睡梦中无预兆地死去。

耶鲁公开课 - 死亡课程节选