I'm afraid I've lost the thread of your argument.

我恐怕没有抓住你的论据的思路。

youdao

I must have skipped a page, because I lost the thread of the story.

我肯定跳过一页，因为我弄不清故事的脉络了。

youdao

Harry lost the thread of his thoughts for a moment and Hedwig did nothing to help him retrieve it, but continued to sit with her head under her wing.

哈利的思路断了，海德薇并没有帮他找回，仍把脑袋藏在翅膀底下不动。

youdao