Since it was very dark, she did not recognize him and explained, "I'm sorry, sir, but the professor is not at home."
终于，他的妻子来开门了。由于天很黑了，他妻子没看出来是他，于是就解释说：“非常抱歉，先生，教授不在家。”
Excitedly, he announces to Professor Reiser that he wants to pursue Dark Matter for his thesis.
他兴奋地向导师宣布他要将暗物质作为自己的博士论文课题。
Excitedly, he announces to Professor Reiser that he wants to pursue Dark Matter for his thesis.
他兴奋地向导师宣布他要将暗物质作为自己的博士论文课题。
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