Then, once it is in place, it is partly flooded and allowed to sink to the riverbed around the breach, making a tight seal.

一旦到位，就向拱坝内灌水使它沉到裂口周围的河床上，形成了一道严密的围堰。

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Traditionally, companies maintained a tight seal on any information that was exposed to the outside world and held strict controls on their internal document management systems.

传统上，企业严格限制对外公布的信息，牢牢控制着内部的文档管理系统。

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The tapered plug is precision ground from hardened high alloy material or an overlaid stainless to assure a tight seal and easy operation.

锥形阀塞经过精密研磨，采用硬化高合金材料或一种镀层不锈钢，确保紧密密封和操作容易。

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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

Because of the tiny size, however, we had to jam them oddly far into our ear canals to get a tight seal no matter which tips we used (single and dual-flange options are offered).

ENGADGET: Ears-on with Klipsch's latest intra-aural headphone lineup: Image S4 (II) series, X7i