The witness was clearly lying through his teeth.

那证人分明是在睁着眼睛说瞎话。

《牛津词典》

Sorry Rob -he's lying through his teeth -he went to the cinema on Sunday!

抱歉，罗布——他这是睁眼说瞎话啊——他周日去电影院了！

youdao

Helen: Sorry Rob - he's lying through his teeth - he went to the cinema on Sunday!

海伦：抱歉罗布，他这是在睁眼说瞎话，他周日去电影院看电影了！

youdao