追及されて、つい、見え透いた嘘をついてしまった。

tbd

I was pressed by their questioning and slipped into telling an obvious lie.

君の説明は見えすいている。とても本当とは思えないよ。

tbd

Your explanation won't wash; it's too improbable to be true.

Your explanation won't wash. It's too improbable to be true.

家主は、この３日間暖房がきかなかった理由をあれこれ並べ立てたが、どうせ見え透いたウソだった。

tbd

The landlord told me a cock and bull story about why we didn't have heat for three days.