My brain is in a whirl from lack of sleep.

我的大脑因缺乏睡眠而昏昏欲睡。

His head was in a whirl, green circles swam before his eyes.

他的头在旋转， 绿色的圆圈在他眼前游动。

She had been trying so hard—so very hard—thinking and thinking till her brain was in a whirl; and it seemed so heartless of him to treat her so, after all.

她一直在努力——非常努力——想来想去， 直到她的大脑开始旋转； 毕竟，他这样对待她似乎太无情了。

The boxes containing the presents were to be opened with great ceremony, and there was to be a glittering feast spread in Miss Minchin's sacred room. When the day arrived the whole house was in a whirl of excitement.

装着礼物的盒子将以隆重的仪式打开，明钦小姐神圣的房间里将举行一场闪闪发光的盛宴。当这一天到来时，整个房子都处于兴奋的漩涡中。

" Mon ami, " said Poirot, in his gentle ironical voice, " is it that we are to remain planted here all night — just because you have seen a beautiful young woman, and your head is in a whirl" ?

“我的朋友，”波洛用他温柔讽刺的声音说，“我们整晚都待在这里——就因为你看到了一个美丽的年轻女人，而你的头在旋转”？

I relinquished the piece of paper, and watched him put it away in his case, with the same methodical care that he bestowed on everything. My brain was in a whirl. What was this complication of a will? Who had destroyed it?

我放弃了那张纸，看着他把它放在他的箱子里，就像他对待每件东西一样有条不紊。我的大脑在旋转。遗嘱的复杂性是什么？谁毁了它？