contralto tones女低音单调I had a very low contralto voice.我有一副很低的女低音嗓音。The score calls for a contralto...这次的配乐需要一位女低音歌手。a contralto part女低音声部The score calls for a contralto.这次的配乐需要一位女低音歌手。The contralto part calls for a very w...
Synthesis and Function Studies on New Porphyrin Lanthanide Liquid Crystals Compounds.红光发射材料卟啉化合物的合成及其电致发光性能的研究.Lanthanide ions were incorporated through the sol - gel process.在溶胶 - 凝胶过程中引入稀土离子来制备发光材料.The promotion effect...
刚出首都，总统无人护卫的汽车就遭到了伏击。The President's unescorted vehicle was ambushed just outside the capital.他以压倒性多数赢得上月的总统选举。He won last month's presidential election by a landslide.我认为副总统是局内人。I think that the vice president...