Cadence means the rise and fall of the voice in reading with rhythm.顿挫抑扬是形容朗读时声音的高低曲折和和谐的的节奏.The horse's strides are shorter than in the other canters, without losing elasticity and cadence.马的步幅比其他几种跑步较短, 但却不失弹性与弹力....
Both clay and sandstone are unstable rock formations.黏土和砂岩都是不牢固的岩石构造。Clouds are formations of condensed water vapour.云是由凝聚的水蒸气构成的.Enormous cloud formations formed a purple mass.巨大的云层形成紫色云团。...