她总是乐于助人 » She was always helpful 研究了这10种酰胺基系列卟啉化合物的拉曼光谱和荧光光谱的变化 » These 10 studies of porphyrin amide series of Raman and flu...
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是的、她总是乐于助人 Yes, she was always helpful ; Yes and she always helpful
她平时总是乐于助人 She is always helpful ; She usually is always helpful
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