When a commercial airliner is trapped within a ring of erupting volcanoes, the passengers and crew must find a way to survive - without landing.

当一架客机困在一堆喷发的火山中时，乘客和机组人员必须设法求生——在不降落的情况下。

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The relative position between powder sending landing and spot can effect the quality of ring sample, if powder locates inside of spot, the outside wall of ring sample is smooth;

送粉落点与光斑相对位置会影响环形件的内外壁品质，粉末偏向光斑内侧，环形件外壁光滑；

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There was a gas ring in the fender, and a shelf where food was kept, and on the landing outside there was a brown earthenware sink, common to several rooms.

屋子里有个煤气灶，一个食物柜，外面的台阶上有个棕色的陶瓷水池，是几家合用的。

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Mr Kohl may look groggy, but he is an old pro when it comes to landing big punches in the national ring after being drubbed in the regions.

ECONOMIST: Who will win Germany?

Honours even then in the verbal sparring stakes with neither boxer landing a knockout punch but expect more fireworks when the fighters square up for real in the ring next month.

BBC: Rogan and Harrison trade verbals