Surface proximity and swirl rotational speed are the two basic factors leading to flame lift-off asymmetry, but their influences on the flame lift-off length is not strong.

模拟的结果发现贴壁程度和涡流转速是产生火焰浮起长度不对称性的基础，但其对火焰浮起长度的影响并不显著；

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The lift shaft has the advantage that since the lift shaft adopts a lifting mechanism, passengers can get on and off the bus more conveniently and easily.

本实用新型的有益效果是：由于是采用了升降机构，使得上、下车更方便、省力。

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This was it. What could be an impossible effort in the history of spaceflight was ready to lift off on its final chance for success.

VOA: special.2009.07.01

So,NASA announced that Gemini Seven would lift off on December third, nineteen sixty-five.

VOA: special.2009.06.24

The new schedule calls for Endeavour to lift off before dawn on Wednesday, the same day that NASA had hoped to launch a separate mission to survey the moon.

VOA: standard.2009.06.16

The rocket had been due to take off on Wednesday, but lift-off was cancelled three hours before launch after fire extinguishing fluids were detected leaking from parts of the equipment.

BBC: South Korea rocket 'explodes' moments after take-off

Mr Kelly is commander of the Endeavour, due to lift off on Friday.

BBC: Gabrielle Giffords can attend husband's shuttle launch

To boost domestic oil supply, Mr McCain wants to lift the long-standing ban on drilling off the Atlantic and Pacific coasts (although, unlike Sarah Palin, he would keep the Arctic National Wildlife Refuge off-limits).

ECONOMIST: Energy and the environment