Positive mechanical thrust drives plug into body seats to ensure tight bi-directional line seal.

积极的机械推力驱动阀塞进入阀体阀座馁，确保紧密双向管路密封。

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A leaking choke line has added delay to tests designed to make sure the well can tolerate the pressures engendered by a firm seal on the top.

一条阻塞线的泄漏导致测试延期，该测试旨在保障油井可以承受顶部严密封死的压力。

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A helium line unexpectedly vented, eventually leading ground support crews to a ring that had come loose from a seal.

一根氦管路意外泄露，最后地面支持人员发现问题源自一个松动的密封环。

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John's didn't score on the ensuing possession, Sampson went 2 for 4 from the line to seal the win.

WSJ: St. John's beats DePaul 79-74 in OT

But the 27-year-old produced a vicious forehand down the line to seal her win at the first time of asking.

BBC: Venus Williams tumbles out of French Open

The drainage will help disperse excess ground water and a specialist flexible waterproof liner mat will be used to re-line and seal the canal.

BBC: Work starts to repair breached Trent and Mersey Canal