The leak was eventually traced to a broken seal.

最后查出泄漏是由于密封处破裂所致。

《牛津词典》

Melvin B. Tolson: [noticing the broken seal] Hmm, looks like someone already opened it.

迈尔文·托尔森(注意到了坏断的封条)：呣，看起来已经有人打开过它了。

youdao

Only drink bottled water and check the seal isn't broken.

只喝瓶装水，并且要看封口开了没有。

《牛津词典》

Leicester's defence was well-organised and water-tight, but the seal was almost broken before the interval when Robert Lee's effort fizzed through a crowd of players, but Flowers caught a glimpse and saved low down to his left.

BBC: Shearer

Medicines for indigestion and other ailments littered the floor and there was a large amount of broken glass everywhere, testament to the intensity of the SEAL assault on the compound.

CNN: A visit to Osama bin Laden's lair

Although she was broken in the first game of the final set, she hit back straight away and went on to seal the win.

BBC: Flavia Pennetta