一些气球飞行家曾提到在舰上使用系留气球的问题.Some balloonists talked of using captive ', ballons from ships.为研究系留气球稳定性,建立了系留气球的三维非线性动力学模型.To stability analysis of tethered balloon, a three dimensional nonlinear mathematical model tethere...
The soldiers fired without provocation...士兵无缘无故就开枪了。She sometimes angers with little or no provocation.她有时无缘无故就生气.Her plea of guilty to manslaughter through provocation was rejected.她因受到挑衅而过失杀人的有罪答辩被驳回。He's got a fi...
There is a trend for knocking public-school headmasters and headmistresses off their perches.现在有一种推翻公立学校校长权威性的趋势。Not any more, mocked the crows from shady pine bough perches.时光不再啊, 乌鸦栖息在成荫的松树主枝上,向我发出嘲笑.The birds were hop...