正当她准备动用自己的存款时，格雷格赶来给她救了急。Just when she was ready to dip into her savings, Greg hastened to her rescue.格雷格一家把他们的车库改成了客房.The Greggs have transformed their garage into a guest house.我了解格雷格·米克和他的可怜的小骗局.I know about Greg Meek...
In experimenting we find out that sound travels with different velocities through different substances.在实验中,我们发现声音以不同的速度通过不同的物质而传播.A gas in thermal equilibrium has particles of all velocities.处于热平衡的气体,其粒子有一切速度.At high ga...