Lebanon is sealing off its borders, and Beirut airport is closing at midnight tonight.

黎巴嫩正在关闭边境，贝鲁特机场将在今晚午夜关闭。

The ice layer sealing off many of these lakes, is up to 15 feet thick.

冰层封锁许多这样的湖泊，冰层厚达15英尺。

The military is increasingly using the tactic of sealing off urban neighborhoods to round up its critics.

军方越来越多地使用封闭城市社区的策略来围捕批评人士。

But before it could eat, the dripping resin of a tree killed both predator and prey, sealing them off from the world.

但在它吃东西之前， 树上滴下的树脂杀死了捕食者和猎物，将它们与世界隔离开来。

But it's more than respect; trust involves allowing yourself to be vulnerable-to not sealing off the outcome and letting it sit there in the ballot box.

但这不仅仅是尊重；信任包括让你自己变得脆弱——不封闭结果，让它留在投票箱里。

Engineers plan to use rails to slide it over the current structure this November and to finish sealing it off by the end of next year.

工程师计划在今年 11 月使用导轨将其滑过当前结构，并在明年年底前完成密封。

Zhang Yingchun, Hunan's executive vice-governor, said more than 100,000 cubic meters of rock have been used in sealing off the breach, and crews had been sealing off 3.5 meters of the breach an hour.

湖南省常务副省长张迎春称，目前已使用了超过10万立方米的块石封堵决口，每小时封堵约3.5米。