A device that can be used to quickly seal the top of the well in the event of a well control event (kick).

一旦井控或井涌发生时，可以用于快速密封井眼上部的装置称为闸板式防喷器。

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This "top kill" was meant to get enough mud into the pipes to seal the well and stop the flow of oil.

这种“灭顶法”是一种为了封闭油井，阻止油漏而将足够的重液打入管道的方法。

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When it starts to smoke add the broccoli and cover with a lid or an oven tray - it's critical to seal it so the broccoli fries from the bottom but steams at the top.

开始冒烟的时候加西兰花，盖上盖子或烤箱托盘——密封很关键，从底部炸西兰花，在顶部蒸。

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Each one had a seal at the top which was removed before it was fired, setting off a chemical reaction to produce oxygen as well as a lot of heat, the coroner heard.

BBC: Crew 'fought to save submariners'

Poor decision making prevented Holloway's team from scoring a fourth but they closed out the match to seal their place in the top flight.

BBC: Blackpool 3-2 Cardiff

The point was enough for Italy to seal top spot in the group and an automatic place in the World Cup finals.

BBC: Inexperience cost us - Trapattoni