Double-dummy, declarer had to cash HA, cross to DA, ruff a club and then run the diamonds. This Dentist's Coup avoids the trump promotion.

双明手，石淼这个庄须得兑现HA，DA过手，将吃一张草花，然后打方块。这个牙医妙招可以避免将牌升级。

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The model establishes the base for the 3D digital design, analysis of the finity unit, dummy manufacture of the double-circular-arc gear.

该模型为双圆弧齿轮的三维数字化设计、有限元分析、虚拟制造等奠定了基础。

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Methods This is a randomized, double blind, double-dummy, multi-center, parallel positive controlled clinical study.

方法用随机化、双盲、双模拟、多中心、阳性药平行对照研究方法。

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Fly-half Giteau conjured a superb third with a double dummy before steaming through a gaping hole and converting his own try.

BBC: Lewsey & Corry bow out in defeat

Peacock bulldozed over from close range, before Jamie Jones-Buchanan's double dummy set up Webb to touch down, and Hall ran half the length of the field to score his second try, straight from the restart.

BBC: Catalans Dragons 16-36 Leeds