爷爷奶奶叹着气说情况变得如何如何糟糕。The grandparents sigh and say how things have changed for the worse.“爷爷，您知道戴安娜是谁吧？”——“我当然知道！”"You know who Diana was, Grandfather."— 'So I do!'我和爷爷很亲。I had a close relationship with my grandf...
He directed all his energies to the task.他把全部精力都用于这项任务上。They canalize their energies into charity work.他们致力于慈善事业.The electromagnetic spectrum covers an enormous range of frequencies and energies.电磁波谱包括极大的频率和能量范围.Let no m...