the density of a gas一种气体的密度Mercury has a much greater density than water.水银的密度比水大得多.Astronomers know that Pluto and Triton have nearly the same size, mass, and density.天文学家知道冥王星与海卫一拥有几乎相同的体积、质量与密度。...
I think I saw her, fleetingly, at a football match.我想我在一场足球赛上匆匆见过她一次。A smile passed fleetingly across his face.他脸上闪过一丝笑容。The quarks and gluons indeed break out of confinement and behave collectively, if only fleetingly.夸...
Some birds build nests of twigs.一些鸟用树枝筑巢.A container made of interwoven material, such as rushes or twigs.用材料编成的容器 、 如用灯心草或小树枝.Willow twigs are pliable.柳条很软.The wind whistled through the twigs and fretted the occasional,...
This is a pity, because noise abatement really is a good cause, and it is likely to be discredited if it gets to be associated with bad science.这是件憾事, 因为减少噪音实在是一项美好的事业; 如果把它与贫乏的科学知识搅在一起,那么这种美好的事业有可能使人生疑.Fractures of the ...
Always walk facing the oncoming traffic.走路一定要面向驶来的车辆。He loosed off two shots at the oncoming car.他朝迎面开过来的车子放了两枪。You should watch the oncoming traffic when you are walking along a road.你在马路上走要注意驶来的车辆.Anti - Laser Detector...